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Author	Semenov, A. D.; Heusinger, M. A.; Renk, K. F.; Menschikov, E.; Sergeev, A. V.; Elant'ev, A. I.; Goghidze, I. G.; Gol'tsman, G. N.
Title	Influence of phonon trapping on the performance of NbN kinetic inductance detectors			Type	Journal Article
Year	1997	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	7	Issue	2	Pages	3083-3086
Keywords	NbN KID
Abstract	Voltage and microwave photoresponse of NbN thin films to modulated and pulsed optical radiation reveals, far below the superconducting transition, a response time consistent with the lifetime of nonequilibrium quasiparticles. We show that even in 5 nm thick films at 4.2 K the phonon trapping is significant resulting in a quasiparticle lifetime of a few nanoseconds that is an order of magnitude larger than the recombination time. Values and temperature dependence of the quasiparticle lifetime obey the Bardeen-Cooper-Schrieffer theory and are in quantitative agreement with the electron-phonon relaxation rate determined from the resistive response near the superconducting transition. We discuss a positive effect of the phonon trapping on the performance of kinetic inductance detectors.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1051-8223	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1598
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Author	Gol'tsman, G. N.; Karasik, B. S.; Okunev, O. V.; Dzardanov, A. L.; Gershenzon, E. M.; Ekstrom, H.; Jacobsson, S.; Kollberg, E.
Title	NbN hot electron superconducting mixers for 100 GHz operation			Type	Journal Article
Year	1995	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	5	Issue	2	Pages	3065-3068
Keywords	NbN HEB mixers
Abstract	NbN is a promising superconducting material for hot-electron superconducting mixers with an IF bandwidth larger than 1 GHz. In the 1OO GHz frequency range, the following parameters were obtained for 50 /spl Aring/ thick NbN films at 4.2 K: receiver noise temperature (DSB) /spl sim/1000 K; conversion loss /spl sim/10 dB; IF bandwidth /spl sim/1 GHz; and local oscillator power /spl sim/1 /spl mu/W. An increase of the critical current of the NbN film, increased working temperature, and a better mixer matching may allow a broader IF bandwidth up to 2 GHz, reduced conversion losses down to 3-5 dB and a receiver noise temperature (DSB) down to 200-300 K.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1051-8223	ISBN		Medium
Area		Expedition		Conference
Notes	About LO power required			Approved	no
Call Number				Serial	255
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Author	Karasik, B. S.; Milostnaya, I. I.; Zorin, M. A.; Elantev, A. I.; Gol'tsman, G. N.; Gershenzon, E. M.
Title	High speed current switching of homogeneous YBaCuO film between superconducting and resistive states			Type	Journal Article
Year	1995	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	5	Issue	2	Pages	3042-3045
Keywords	YBCO HTS HEB switches
Abstract	Transitions of thin structured YBaCuO films from superconducting (S) to normal (N) state and back induced by a supercritical current pulse has been studied. A subnanosecond stage in the film resistance dynamic has been observed. A more gradual (nanosecond) ramp in the time dependence of the resistance follows the fast stage. The fraction of the film resistance which is attained during the fast S-N stage rises with the current amplitude. Subnanosecond N-S switching is more pronounced for smaller amplitudes of driving current and for shorter pulses. The phenomena observed are viewed within the framework of an electron heating model. The expected switching time and repetition rate of an optimized current controlling device are estimated to be 1-2 ps and 80 GHz respectively.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1051-8223	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1620
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Author	Gorokhov, G.; Bychanok, D.; Gayduchenko, I.; Rogov, Y.; Zhukova, E.; Zhukov, S.; Kadyrov, L.; Fedorov, G.; Ivanov, E.; Kotsilkova, R.; Macutkevic, J.; Kuzhir, P.
Title	THz spectroscopy as a versatile tool for filler distribution diagnostics in polymer nanocomposites			Type	Journal Article
Year	2020	Publication	Polymers (Basel)	Abbreviated Journal	Polymers (Basel)
Volume	12	Issue	12	Pages	3037 (1 to 14)
Keywords	THz spectroscopy; nanocomposites, percolation threshold, time-domain spectroscopy, time-domain spectrometer, TDS
Abstract	Polymer composites containing nanocarbon fillers are under intensive investigation worldwide due to their remarkable electromagnetic properties distinguished not only by components as such, but the distribution and interaction of the fillers inside the polymer matrix. The theory herein reveals that a particular effect connected with the homogeneity of a composite manifests itself in the terahertz range. Transmission time-domain terahertz spectroscopy was applied to the investigation of nanocomposites obtained by co-extrusion of PLA polymer with additions of graphene nanoplatelets and multi-walled carbon nanotubes. The THz peak of permittivity's imaginary part predicted by the applied model was experimentally shown for GNP-containing composites both below and above the percolation threshold. The physical nature of the peak was explained by the impact on filler particles excluded from the percolation network due to the peculiarities of filler distribution. Terahertz spectroscopy as a versatile instrument of filler distribution diagnostics is discussed.
Address	Institute of Photonics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	English	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2073-4360	ISBN		Medium
Area		Expedition		Conference
Notes	PMID:33353036; PMCID:PMC7767186			Approved	no
Call Number				Serial	1780
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Author	Lindgren, M.; Trifonov, V.; Zorin, M.; Danerud, M.; Winkler, D.; Karasik, B. S.; Gol’tsman, G. N.; Gershenzon, E.M.
Title	Transient resistive photoresponse of YBa₂Cu₃O_7−δ films using low power 0.8 and 10.6 μm laser radiation			Type	Journal Article
Year	1994	Publication	Appl. Phys. Lett.	Abbreviated Journal	Appl. Phys. Lett.
Volume	64	Issue	22	Pages	3036-3038
Keywords	YBCO HTS HEB, nonequilibrium
Abstract	Thin YBa2Cu3O7−δ laser deposited films were patterned into devices consisting of ten parallel 1 μm wide strips. Nonequilibrium picosecond and bolometric photoresponses were studied by the use of 17 ps full width at half‐maximum laser pulses and amplitude modulated radiation from an AlGaAs laser up to 10 GHz and from a CO2 laser up to 1 GHz. The time and frequency domain measurements were in agreement. The fast response can be explained by electron heating. The use of low optical power and a sensitive measurement system excluded any nonlinear transient processes and kinetic inductance changes in the superconducting state. At 1 GHz modulation frequency, the responsivity was ∼1.2 V/W both for 0.8 and 10.6 μm wavelengths. The sensitivity of a fast and spectrally broadband infrared detector is discussed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0003-6951	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1639
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Author	Elmanova, A.; Elmanov, I.; Komrakova, S.; Golikov, A.; Javadzade, J.; Vorobyev, V.; Bolshedvorskii, S.; Soshenko, V.; Akimov, A.; Kovalyuk, V.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A.
Title	Integration of nanodiamonds with NV-centers on optical silicon nitride structures			Type	Conference Article
Year	2019	Publication	EPJ Web Conf.	Abbreviated Journal	EPJ Web Conf.
Volume	220	Issue		Pages	03013
Keywords	nanodiamonds, NV-centers, Si3N4
Abstract	In this work we had developed optical structures from silicon nitride for further integration of the nanodiamonds containing NV-centers with them. We have introduced method of the nanodiamonds solution application on the substrates. The work has practical meaning in nanophotonics sphere and in development of optical devices with single-photon sources.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1190
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Author	Elmanov, I.; Elmanova, A.; Komrakova, S.; Golikov, A.; Kaurova, N.; Kovalyuk, V.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A.
Title	Method for determination of resists parameters for photonic – integrated circuits e-beam lithography on silicon nitride platform			Type	Conference Article
Year	2019	Publication	EPJ Web Conf.	Abbreviated Journal	EPJ Web Conf.
Volume	220	Issue		Pages	03012
Keywords	e-beam lithography, Si3N4
Abstract	In the work the thicknesses of the e-beam resists ZEP 520A and ma-N 2400 by using non-destructive method were measured, as well as recipe for the high ratio between the Si3N4 and the resists etching rate was determined. The work has a practical application for e-beam lithography of photonic-integrated circuits and nanophotonics devices based on silicon nitride platform.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1189
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Author	Elezov, M.; Scherbatenko, M.; Sych, D.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A.
Title	Towards the fiber-optic Kennedy quantum receiver			Type	Conference Article
Year	2019	Publication	EPJ Web Conf.	Abbreviated Journal	EPJ Web Conf.
Volume	220	Issue		Pages	03011 (1 to 2)
Keywords	SSPD, SNSPD, Kennedy quantum receiver
Abstract	We consider practical aspects of using standard fiber-optic elements and superconducting nanowire single-photon detectors for the development of a practical quantum receiver based on the Kennedy scheme. Our receiver allows to discriminate two phase-modulated coherent states of light at a wavelength of 1.5 microns in continuous mode with bit rate 200 Kbit/s and error rate about two times below the standard quantum limit.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1288
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Author	Semenov, A.; Richter, H.; Hübers, H.-W.; Smirnov, K.; Voronov, B.; Gol'tsman, G.
Title	Development of terahertz superconducting hot-electron bolometer mixers			Type	Conference Article
Year	2003	Publication	Proc. 6th European Conf. Appl. Supercond.	Abbreviated Journal	Proc. 6th European Conf. Appl. Supercond.
Volume	181	Issue		Pages	2960-2965
Keywords	NbN HEB mixers
Abstract	We present recent results of the development of phonon cooled hot-electron bolometric (HEB) mixers for airborne and balloon borne terahertz heterodyne receivers. Three iomportant issues have been addresses: the quality of NbN films the HEB mixers were made from, the spectral properties of the HEB mixers and the local oscillator power required for optical operation. Studies with an atomic force microscope indicate, that the performance of the HEB mixer might have been effected by the microstructure of the NbN film. Antenna gain and noise temperature were investigated at terahertz frequencies for a HEB embedded in either log-spiral or twin-slot feed antenna. Comparison suggests that at frequencies above 3 THz the spiral feed provides better overall performance. At 1.6 THz, a power of 2.5 µW was required from the local oscillator for optimal operation of the HEB mixer.
Address	Sorrento, Italy
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN	0750309814, 978-0750309813	Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1505
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Author	Jiang, Ling; Miao, Wei; Zhang, Wen; Li, Ning; Lin, Zhen Hui; Yao, Qi Jun; Shi, Sheng-Cai; Svechnikov, S. I.; Vakhtomin, Y. B.; Antipov, S. V.; Voronov, B. M.; Kaurova, N. S.; Gol'tsman, G. N.
Title	Characterization of a quasi-optical NbN superconducting HEB mixer			Type	Journal Article
Year	2006	Publication	IEEE Trans. Microwave Theory Techn.	Abbreviated Journal	IEEE Trans. Microwave Theory Techn.
Volume	54	Issue	7	Pages	2944-2948
Keywords	NbN HEB mixers
Abstract	In this paper, the performance of a quasi-optical NbN superconducting hot-electron bolometer (HEB) mixer, cryogenically cooled by a close-cycled 4-K refrigerator, is thoroughly investigated at 300, 500, and 850 GHz. The lowest receiver noise temperatures measured at the respective three frequencies are 1400, 900, and 1350 K, which can go down to 659, 413, and 529 K, respectively, after correcting the loss and associated noise contribution of the quasi-optical system before the measured superconducting HEB mixer. The stability of the quasi-optical superconducting HEB mixer is also investigated here. The Allan variance time measured with a local oscillator pumping at 500 GHz and an IF bandwidth of 110 MHz is 1.5 s at the dc-bias voltage exhibiting the lowest noise temperature and increases to 2.5 s at a dc bias twice that voltage.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0018-9480	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1448
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Author	Gershenzon, E. M.; Gol’tsman, G. N.; Dzardanov, A. L.; Zorin, M. A.
Title	Ultrafast superconductive switch			Type	Journal Article
Year	1991	Publication	IEEE Trans. Magn.	Abbreviated Journal	IEEE Trans. Magn.
Volume	27	Issue	2	Pages	2844-2846
Keywords	Nb superconducting switch
Abstract	The transition from superconductive to resistive state caused by infrared radiation and bias current pulses was investigated in order to minimize switching time tau and driving power W. Experimental results for Nb microstrips confirm the correctness of calculations based on the model of electron heating. For Nb switches, tau measured directly is 0.3-0.8 ns for radiation pulses and 1-3 ns for bias current pulses at T=4.2 K, while for YBaCuO switches at T=77 K it is expected to be several picoseconds. For an YBaCuO sample with the dimensions of 520.15 mu m/sup 2/, W was 10 mW, and it can be further reduced to the order of several microwatts by decreasing the volume of the sample.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1941-0069	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1680
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Author	Gershenzon, E. M.; Gershenzon, M. E.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V.
Title	Wide-band highspeed Nb and YBaCuO detectors			Type	Journal Article
Year	1991	Publication	IEEE Trans. Magn.	Abbreviated Journal	IEEE Trans. Magn.
Volume	27	Issue	2	Pages	2836-2839
Keywords	YBCO, HTS, Nb detectors
Abstract	The physical limitations on the response time and the nature of nonequilibrium detection of radiation were investigated for Nb and YBCO film in a wide spectral range from millimeter to near-infrared wavelengths. In the case of ideal heat removal from the film, the detection mechanism is connected with an electron heating effect which is not selective over a wide spectral interval. For Nb, the dependence of the response time on the electron mean free path l and temperature T is tau varies as T/sup -2/l/sup -1/. The values of detectivity D* and tau are 310/sup 11/ W/sup -1/ Hz/sup 1/2/ cm and 510/sup -9/ s at T=1.6 K, respectively. For YBCO film the tau value of 1-2 ps at T=77 K was obtained; the NEP value of 3*10/sup -11/ W-Hz/sup -1/2/ can be obtained at T=77 K in the case of the optimal film matching to the radiation.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0018-9464	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	239
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Author	Yagoubov, P.; Kroug, M.; Merkel, H.; Kollberg, E.; Gol'tsman, G.; Svechnikov, S.; Gershenzon, E.
Title	Noise temperature and local oscillator power requirement of NbN phonon-cooled hot electron bolometric mixers at terahertz frequencies			Type	Journal Article
Year	1998	Publication	Appl. Phys. Lett.	Abbreviated Journal	Appl. Phys. Lett.
Volume	73	Issue	19	Pages	2814-2816
Keywords	NbN HEB mixers, noise temperature, local oscillator power
Abstract	In this letter, the noise performance of NbN-based phonon-cooled hot electron bolometric quasioptical mixers is investigated in the 0.55–1.1 THz frequency range. The best results of the double-sideband <cd><2018>DSB<cd><2019> noise temperature are: 500 K at 640 GHz, 600 K at 750 GHz, 850 K at 910 GHz, and 1250 K at 1.1 THz. The water vapor in the signal path causes significant contribution to the measured receiver noise temperature around 1.1 THz. The devices are made from 3-nm-thick NbN film on high-resistivity Si and integrated with a planar spiral antenna on the same substrate. The in-plane dimensions of the bolometer strip are typically 0.2Ï«2 um. The amount of local oscillator power absorbed in the bolometer is less than 100 nW.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	911
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Author	Somani, S.; Kasapi, S.; Wilsher, K.; Lo, W.; Sobolewski, R.; Gol’tsman, G.
Title	New photon detector for device analysis: Superconducting single-photon detector based on a hot electron effect			Type	Journal Article
Year	2001	Publication	J. Vac. Sci. Technol. B	Abbreviated Journal	J. Vac. Sci. Technol. B
Volume	19	Issue	6	Pages	2766-2769
Keywords	NbN SSPD, SNSPD
Abstract	A novel superconducting single-photon detector (SSPD), intrinsically capable of high quantum efficiency (up to 20%) over a wide spectral range (ultraviolet to infrared), with low dark counts (<1 cps), and fast (<40 ps) timing resolution, is described. This SSPD has been used to perform timing measurements on complementary metal–oxide–semiconductor integrated circuits (ICs) by detecting the infrared light emission from switching transistors. Measurements performed from the backside of a 0.13 μm geometry flip–chip IC are presented. Other potential applications for this detector are in telecommunications, quantum cryptography, biofluorescence, and chemical kinetics.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0734211X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1542
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Author	Il'in, K. S.; Lindgren, M.; Currie, M. A.; Semenov, D.; Gol'tsman, G. N.; Sobolewski, Roman; Cherednichenko, S. I.; Gershenzon, E. M.
Title	Picosecond hot-electron energy relaxation in NbN superconducting photodetectors			Type	Journal Article
Year	2000	Publication	Appl. Phys. Lett.	Abbreviated Journal	Appl. Phys. Lett.
Volume	76	Issue	19	Pages	2752-2754
Keywords	NbN HEB detectors, two-temperature model, IF bandwidth
Abstract	We report time-resolved characterization of superconducting NbN hot-electron photodetectors using an electro-optic sampling method. Our samples were patterned into micron-size microbridges from 3.5-nm-thick NbN films deposited on sapphire substrates. The devices were illuminated with 100 fs optical pulses, and the photoresponse was measured in the ambient temperature range between 2.15 and 10.6 K (superconducting temperature transition TC). The experimental data agreed very well with the nonequilibrium hot-electron, two-temperature model. The quasiparticle thermalization time was ambient temperature independent and was measured to be 6.5 ps. The inelastic electron–phonon scattering time Ï„e–ph tended to decrease with the temperature increase, although its change remained within the experimental error, while the phonon escape time Ï„es decreased almost by a factor of two when the sample was put in direct contact with superfluid helium. Specifically, Ï„e–ph and Ï„es, fitted by the two-temperature model, were equal to 11.6 and 21 ps at 2.15 K, and 10(±2) and 38 ps at 10.5 K, respectively. The obtained value of Ï„e–ph shows that the maximum intermediate frequency bandwidth of NbN hot-electron phonon-cooled mixers operating at TC can reach 16(+4/–3) GHz if one eliminates the bolometric phonon-heating effect.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0003-6951	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	856
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Author	Cherednichenko, S.; Rönnung, F.; Gol'tsman, G.; Kollberg, E.; Winkler, D.
Title	YBa2Cu3O7−δ hot-electron bolometer mixer			Type	Journal Article
Year	2000	Publication	Phys. C: Supercond.	Abbreviated Journal	Phys. C: Supercond.
Volume	341-348	Issue		Pages	2653-2654
Keywords	YBCO HTS HEB mixers
Abstract	We present an investigation of hot-electron bolometric mixer based on YBa2Cu3O7−δ (YBCO) superconducting thin film. Mixer conversion loss, absorbed local oscillator power and intermediate frequency bandwidth was measured at the local oscillator frequency 600 GHz. The fabrication technique for nanoscale YBCO hot-electron bolometer (HEB) mixer integrated into planar antenna structure is described.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0921-4534	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1552
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Author	Gol'tsman, G.; Kouminov, P.; Goghidze, I.; Gershenzon, E.
Title	Nonequilibrium kinetic inductive response of YBCO thin films to low power laser pulses			Type	Journal Article
Year	1995	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	5	Issue	2	Pages	2591-2594
Keywords	YBCO HTS KID
Abstract	We have discovered a transient nonequilibrium kinetic inductive voltage response of YBCO thin films to 20 ps pulses of YAG:Nd laser radiation with 0.63 /spl mu/m and 1.54 /spl mu/m wavelength. By increasing the sensitivity of the read-out system with 100 ps resolution time and diminishing the light intensity (fluence 0.1-2 /spl mu/J/cm/sup 2/) and transport current (density /spl les/10/sup 5/ A/cm/sup 2/) we were able to observe a peculiar bipolar signal form with nearly equal amplitudes for each sign. The integration of the kinetic inductive response over time gives the result which is qualitatively, of the same form as the response in the resistive and normal states: the nonequilibrium picosecond scale component is followed by the bolometric nanosecond component. The nonequilibrium response is interpreted as suppression of the order parameter by excess quasiparticles followed by a change both in resistance (for the resistive state) and in kinetic inductance (for the superconducting state).
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1051-8223	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1621
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Author	Gerecht, E.; Musante, C. F.; Zhuang, Y.; Yngvesson, K. S.; Gol’tsman, G. N.; Voronov, B. M.; Gershenzon, E. M.
Title	NbN hot electron bolometric mixerss—a new technology for low-noise THz receivers			Type	Journal Article
Year	1999	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	47	Issue	12	Pages	2519-2527
Keywords	NbN HEB mixers
Abstract	New advances in hot electron bolometer (HEB) mixers have recently resulted in record-low receiver noise temperatures at terahertz frequencies. We have developed quasi-optically coupled NbN HEB mixers and measured noise temperatures up to 2.24 THz, as described in this paper. We project the anticipated future performance of such receivers to have even lower noise temperature and local-oscillator power requirement as well as wider gain and noise bandwidths. We introduce a proposal for integrated focal plane arrays of HEB mixers that will further increase the detection speed of terahertz systems.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1557-9670	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1560
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Author	Chulcova, G. M.; Ptitsina, N. G.; Gershenzon, E. M.; Gershenzon, M. E.; Sergeev, A. V.
Title	Effect of the interference between electron-phonon and electron-impurity (boundary) scattering on resistivity Nb, Al, Be films			Type	Conference Article
Year	1996	Publication	Czech J. Phys.	Abbreviated Journal	Czech J. Phys.
Volume	46	Issue	S5	Pages	2489-2490
Keywords	Al, Be, Nb films
Abstract	The temperature dependence of the resistivity of thin Nb, Al, Be films has been studied over a wide temperature range 4-300 K. We have found that the temperature-dependent correction to the residual resistivity is well described by the sum of the Bloch-Grüneisen term and the term originating from the interference between electron-phonon and electron-impurity scattering. Study of the transport interference phenomena allows to determine electron-phonon coupling in disordered metals. The interference term is proportional to T2 and also to the residual resistivity and dominates over the Bloch-Grüneisen term at low temperatures (T<40 K).
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0011-4626	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1767
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Author	Zorin, M.; Gol'tsman, G.N.; Karasik, B.S.; Elantev, A.I.; Gershenzon, E.M.; Lindgren, M.; Danerud, M.; Winkler, D.
Title	Optical mixing in thin YBa₂Cu₃O_7-x films			Type	Journal Article
Year	1995	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	5	Issue	2	Pages	2431-2434
Keywords	YBCO HTS HEB mixers
Abstract	High quality, j/sub c/ (77 K)>10/sup 6/ A/cm/sup 2/, epitaxial YBa₂Cu₃O_7-x films of 50 nm thickness were patterned into ten parallel 1 /spl mu/m wide strips. The film structure was coupled to a single-mode fiber. Mixer response was obtained at 0.78 /spl mu/m using laser frequency modulation and an optical delay line. Using two semiconductor lasers at 1.55 /spl mu/m wavelength the beating signal was used to measure the photoresponse up to 18 GHz. Nonequilibrium photoresponse in the resistive state of the superconductor was observed. Bolometric response dominates up to 3 GHz, after which the nonequilibrium response is constant up to the frequency limit of our registration system. Using an electron heating model the influence of different thermal processes on the conversion loss has been analyzed. Ways of increasing the sensitivity are also discussed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1051-8223	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1619
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Author	Gershenzon, E. M.; Gol'tsman, G. N.; Dzardanov, A. L.; Elant'ev, A. I.; Zorin, M. A.; Markin, A. G.; Semenov, A. D.
Title	S-N switching of niobium and YBCO films: limit time and perspective of fast key element creation			Type	Journal Article
Year	1992	Publication	Sverkhprovodimost': Fizika, Khimiya, Tekhnika	Abbreviated Journal	Sverkhprovodimost': Fizika, Khimiya, Tekhnika
Volume	5	Issue	12	Pages	2386-2402
Keywords	YBCO HTS switches
Abstract	A study was made on processes of switching of thin niobium film strips between superconducting and normal states under the effect of optical radiation pulse and voltage step. The results are described satisfactorily by the model of spatial homogeneous electron heating. It is shown that limiting switching times can be equal to several shares of nanosecond at 4.2 K. Preliminary results for YBa2Cu3O-7-x films are presented. Prospects and advantages of creation of ducting structures of narrow streps, are discussed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0131-5366	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1674
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Author	Blagosklonskaya, L. E.; Gershenzon, E. M.; Gol'tsman, G. N.; Elant'ev, A. I.
Title	Effect of a high magnetic field on the spectrum of donors in InSb			Type	Journal Article
Year	1977	Publication	Fizika i Tekhnika Poluprovodnikov	Abbreviated Journal	Fizika i Tekhnika Poluprovodnikov
Volume	11	Issue	12	Pages	2373-2375
Keywords	InSb, energy spectrum, donors, high magnetic field
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes	Воздействие сильного магнитного поля на спектр доноров в InSb			Approved	no
Call Number				Serial	1729
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Author	Meledin, D. V.; Marrone, D. P.; Tong, C.-Y. E.; Gibson, H.; Blundell, R.; Paine, S. N.; Papa, D.C.; Smith, M.; Hunter, T. R.; Battat, J.; Voronov, B.; Gol'tsman, G.
Title	A 1-THz superconducting hot-electron-bolometer receiver for astronomical observations			Type	Journal Article
Year	2004	Publication	IEEE Trans. Microwave Theory Techn.	Abbreviated Journal	IEEE Trans. Microwave Theory Techn.
Volume	52	Issue	10	Pages	2338-2343
Keywords	NbN HEB mixer, applications
Abstract	In this paper, we describe a superconducting hot-electron-bolometer mixer receiver developed to operate in atmospheric windows between 800-1300 GHz. The receiver uses a waveguide mixer element made of 3-4-nm-thick NbN film deposited over crystalline quartz. This mixer yields double-sideband receiver noise temperatures of 1000 K at around 1.0 THz, and 1600 K at 1.26 THz, at an IF of 3.0 GHz. The receiver was successfully tested in the laboratory using a gas cell as a spectral line test source. It is now in use on the Smithsonian Astrophysical Observatory terahertz test telescope in northern Chile.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0018-9480	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1484
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Author	Karasik, B. S.; Il'in, K. S.; Pechen, E. V.; Krasnosvobodtsev, S. I.
Title	Diffusion cooling mechanism in a hot-electron NbC microbolometer mixer			Type	Journal Article
Year	1996	Publication	Applied Physics Letters	Abbreviated Journal	Appl. Phys. Lett.
Volume	68	Issue	16	Pages	2285-2287
Keywords	HEB mixer, diffusion cooling channel, diffusion channel
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0003-6951	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	262
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Author	Karasik, B. S.; Gol'tsman, G. N.; Voronov, B. M.; Svechnikov, S. I.; Gershenzon, E. M.; Ekstrom, H.; Jacobsson, S.; Kollberg, E.; Yngvesson, K. S.
Title	Hot electron quasioptical NbN superconducting mixer			Type	Journal Article
Year	1995	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	5	Issue	2	Pages	2232-2235
Keywords	NbN HEB mixers
Abstract	Hot electron superconductor mixer devices made of thin NbN films on SiO/sub 2/-Si/sub 3/N/sub 4/-Si membrane have been fabricated for 300-350 GHz operation. The device consists of 5-10 parallel strips each 5 /spl mu/m long by 1 /spl mu/m wide which are coupled to a tapered slot-line antenna. The I-V characteristics and position of optimum bias point were studied in the temperature range 4.5-8 K. The performance of the mixer at higher temperatures is closer to that predicted by theory for uniform electron heating. The intermediate frequency bandwidth versus bias has also been investigated. At the operating temperature 4.2 K a bandwidth as wide as 0.8 GHz has been measured for a mixer made of 6 nm thick film. The bandwidth tends to increase with operating temperature. The performance of the NbN mixer is expected to be better for higher frequencies where the absorption of radiation should be more uniform.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1051-8223	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1622
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Author	Gershenzon, E.M.; Gol'tsman, G.N.; Dzardanov, A.L.; Kuznetsov, E.A.
Title	Superconducting UHF-limiter based on electron heating up			Type	Journal Article
Year	1992	Publication	Sverkhprovodimost': Fizika, Khimiya, Tekhnika	Abbreviated Journal	Sverkhprovodimost': Fizika, Khimiya, Tekhnika
Volume	5	Issue	11	Pages	2164-2170
Keywords	electron heating, applications
Abstract	The results of experimental investigation of fast-action 5HF-limiter are presented; the limiter is based on the utilization of electron hetaing phenomenon in thin superconducting films. The design of SHF-limiter, which is intended for operation at liquid helium temperatures and which has the form of a section of superconducting NbN microstrip line for 1-12 GHz rang, is described.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0235-8964	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1669
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Author	Nebosis, R. S.; Heusinger, M. A.; Schatz, W.; Renk, K. F.; Gol’tsman, G. N.; Karasik, B. S.; Semenov, A. D.; Gershenzon, E. M.
Title	Ultrafast photoresponse of a structured YBa₂Cu₃O_7-δ thin film to ultrashort FIR laser pulses			Type	Journal Article
Year	1993	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	3	Issue	1	Pages	2160-2162
Keywords	YBCO HTS detectors
Abstract	The authors have investigated the photoinduced voltage response of a current-carrying structured YBa₂Cu₃O_7-δ thin film to ultrashort far-infrared (FIR) laser pulses in the frequency range from 0.7 THz to 7 THz. The detector has shown an almost constant sensitivity of 1 mV/W and a noise equivalent power of less than 5*10/sup -7/ W/ square root Hz. The temperature dependence of the decay time of the detector signal was studied for temperatures around the transition temperature of the film ( approximately 80 K). For a detector temperature where dR/dT had its maximum, the authors observed bolometric signals with decay times of about 2 ns, and for lower temperatures they observed nonbolometric signals with decay times of approximately 120 ps; the duration of the nonbolometric signals was limited by the time resolution of the electronic registration equipment.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1658
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Author	Банная, В. Ф.; Веселова, Л. И.; Гершензон, Е. М.; Гусинский, Э. Н.; Литвак-Горская, Л. Б.
Title	Оценка точности метода определения раздельной концентрации примесей из измерений постоянной Холла			Type	Journal Article
Year	1990	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	24	Issue	12	Pages	2145-2150
Keywords	Hall constant, concentration of impurities, p-Si
Abstract	На примере p-Si⟨B,\,Ga⟩ с различной степенью компенсации проведена сравнительная оценка точности определения раздельной концентрации примесей по температурной зависимости концентрации дырок p(T) в случае одной и двух легирующих примесей с энергиями ионизации, различающимися менее чем в 2 раза. Исследована функция среднеквадратичного отклонения в пространстве параметров D(Nк, N2) (Nк, N1 и N2 — концентрации компенсирующих примесей бора и галлия соответственно, N2≫N1) в предположении, что N2, энергии B и Ga известны. Показано, что в случае двух легирующих примесей D(Nк, N1) в окрестностях минимума имеет «овражный» рельеф и при некоторых соотношениях между Nк и N1 разброс искомых величин превышает порядок, причем увеличение точности измерений p(T) существенного улучшения в вычислении параметров не дает. При одной легирующей примеси точность вычисления параметров высокая.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1754
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Author	Semenov, A. D.; Goghidze, I. G.; Gol’tsman, G. N.; Sergeev, A. V.; Aksaev, E. E.; Gershenzon, E. M.
Title	Non-equilibrium quasiparticle response to radiation and bolometric effect in YBaCuO films			Type	Journal Article
Year	1993	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	3	Issue	1	Pages	2132-2135
Keywords	YBCO HTS HEB detectors
Abstract	The voltage photoresponse of structured current biased YBCO films on different substrates to 20-ps laser pulses of 0.63- mu m and 1.54- mu m wavelengths and to continuously modulated radiation of 2-mm wavelength is measured to temperatures around T_c. Fast picosecond decay of the response to pulsed radiation is followed by slow exponential relaxation with a nanosecond characteristic time depending on the substrate material and film dimensions. The slow component does not depend on wavelength and is attributed to the bolometric effect, while the magnitude of the fast component associated with nonequilibrium response rises with wavelength. More than an order-of-magnitude increase of the nonequilibrium response is seen from near-infrared to millimeter-wave range. This dependence plausibly reflects the low efficiency of multiplication of photoexcited electrons in YBaCuO compared to conventional superconductors.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1558-2515	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1659
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Author	Gershenson, M. E.; Gong, D.; Sato, T.; Karasik, B. S.; Sergeev, A. V.
Title	Millisecond electron-phonon relaxation in ultrathin disordered metal films at millikelvin temperatures			Type	Journal Article
Year	2001	Publication	Appl. Phys. Lett.	Abbreviated Journal
Volume	79	Issue		Pages	2049-2051
Keywords	HEB detector, FIR, far infrared
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number	RPLAB @ s @ heb_eph_interaction_Gershenzon			Serial	315
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Author	Prokhodtsov, A.; Golikov, A.; An, P.; Kovalyuk, V.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A.
Title	Effect of silicon oxide coating on a silicon nitride focusing grating coupler efficiency			Type	Conference Article
Year	2019	Publication	EPJ Web Conf.	Abbreviated Journal	EPJ Web Conf.
Volume	220	Issue		Pages	02009
Keywords	grating coupler, SiO2
Abstract	The dependence of the efficiency of the focusing grating couplers on the period and filling factor before and after deposition of the upper silicon oxide layer was experimentally studied. The obtained data are of practical importance for tunable integrated-optical devices based on silicon nitride platform.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1188
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Author	Goltsman, G.; Naumov, A. V.; Gladush, M. G.; Karimullin, K. R.
Title	Quantum photonic integrated circuits with waveguide integrated superconducting nanowire single-photon detectors			Type	Conference Article
Year	2018	Publication	EPJ Web Conf.	Abbreviated Journal	EPJ Web Conf.
Volume	190	Issue		Pages	02004 (1 to 2)
Keywords	waveguide SSPD, SNSPD
Abstract	We show the design, a history of development as well as the most successful and promising approaches for QPICs realization based on hybrid nanophotonic-superconducting devices, where one of the key elements of such a circuit is a waveguide integrated superconducting single-photon detector (WSSPD). The potential of integration with fluorescent molecules is discussed also.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1320
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Author	Anfertev, V.; Vaks, V.; Revin, L.; Pentin, I.; Tretyakov, I.; Goltsman, G.; Vinogradov, E. A.; Naumov, A. V.; Gladush, M. G.; Karimullin, K. R.
Title	High resolution THz gas spectrometer based on semiconductor and superconductor devices			Type	Conference Article
Year	2017	Publication	EPJ Web Conf.	Abbreviated Journal	EPJ Web Conf.
Volume	132	Issue		Pages	02001 (1 to 2)
Keywords	NbN HEB mixers, detectors, THz spectroscopy
Abstract	The high resolution THz gas spectrometer consists of a synthesizer based on Gunn generator with a semiconductor superlattice frequency multiplier as a radiation source, and an NbN hot electron bolometer in a direct detection mode as a THz radiation receiver was presented. The possibility of application of a quantum cascade laser as a local oscillator for a heterodyne receiver which is based on an NbN hot electron bolometer mixer is shown. The ways for further developing of the THz spectroscopy were outlined.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1328
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Author	Гершензон, Е. М.; Грачев, С. А.; Литвак-Горская, Л. Б.
Title	Механизм преобразования частоты в n-InSb-смесителе			Type	Journal Article
Year	1991	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	25	Issue	11	Pages	1986-1998
Keywords	n-InSb mixer
Abstract	Проведено комплексное исследование n-InSb смесителя на λ=2.6 мм, включающее в себя исследование вольт-амперных характеристик при E=0−2 В/см, температурной зависимости проводимости в диапазоне T=1.6−20 K, высокочастотной проводимости при f=0.5−10 МГц и магнитосопротивления при H=0−5 кЭ. Показано, что в оптимальном режиме механизм преобразования частоты связан с фотоионизационными процессами при прыжковой фотопроводимости (ПФП). На основе модели ПФП рассчитан коэффициент преобразования смесителя и произведено сопоставление его с экспериментом. Показана несостоятельность модели преобразования частоты в компенсированном n-InSb (K≥0.8), основанной на разогреве электронов. Обсуждены требования к параметрам материала и режимам n-InSb смесителя миллиметрового диапазона волн.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1753
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Author	Karasik, B.S.; Milostnaya, I.I.; Zorin, M.A.; Elantev, A.I.; Gol'tsman, G.N.; Gershenzon, E.M.
Title	Subnanosecond S-N and N-S switching of YBCO film induced by current pulse			Type	Journal Article
Year	1994	Publication	Phys. C: Supercond.	Abbreviated Journal	Phys. C: Supercond.
Volume	235-240	Issue		Pages	1981-1982
Keywords	YBCO HTS switches
Abstract	A transition of YBCO bridge 60 nm thick from superconducting to normal state induced by an abrupt current step has been studied. A subnanosecond stage has been observed during both S-N and N-S transition. The data obtained can be explained by hot-electron phenomena. On the basis of experimental results a prediction of picosecond switch performance has been made.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0921-4534	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1633
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Author	Gol'tsman, G. N.; Kouminov, P.; Goghidze, I.; Gershenzon, E. M.
Title	Nonequilibrium kinetic inductive response of YBaCuO thin films to low-power laser pulses			Type	Journal Article
Year	1994	Publication	Phys. C: Supercond.	Abbreviated Journal	Phys. C: Supercond.
Volume	235-240	Issue		Pages	1979-1980
Keywords	YBCO HTS KID
Abstract	Transient non-equilibrium kinetic inductive voltage response of YBaCuO thin films to 20 ps pulses of YAG:Nd laser radiation with 0.63 μm and 1.5 μm wavelength has been revealed. By increasing the sensitivity of 100 ps resolution time registration system and diminishing light intensity (fluence 0.1-1 μJ2/cm2) and transport current (density j≤105 A/cm2) we observed a perculiar bipolar signal form with nearly equal amplitudes of each sign. The integration of the kinetic inductive response over time gives the result which is qualitatively of the same form as the response in the resistive and normal states: nonequilibrium picosecond scale component followed by bolometric nanosecond. Nonequilibrium response is interpreted as suppression of order parameter by excess of quasiparticles followed by a change in resistance in the resistive state and kinetic inductance in superconductive state.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0921-4534	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1634
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Author	Baselmans, J. J. A.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; de Korte, P. A. J.; Voronov, B.; Gol'tsman, G.
Title	Doubling of sensitivity and bandwidth in phonon cooled hot electron bolometer mixers			Type	Journal Article
Year	2004	Publication	Appl. Phys. Lett.	Abbreviated Journal	Appl. Phys. Lett.
Volume	84	Issue	11	Pages	1958-1960
Keywords	NbN HEB mixers
Abstract	We demonstrate that the performance of NbN lattice cooled hot electron bolometer mixers depends strongly on the interface quality between the bolometer and the contact structure. We show experimentally that both the receiver noise temperature and the gain bandwidth can be improved by more than a factor of 2 by cleaning the interface and adding an additional superconducting interlayer to the contact pad. Using this we obtain a double sideband receiver noise temperature TN,DSB=950 K at 2.5 THz and 4.3 K, uncorrected for losses in the optics. At the same bias point, we obtain an IF gain bandwidth of 6 GHz.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	352
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Author	Budyanskij, M. Ya.; Sejdman, L. A.; Voronov, B. M.; Gubkina, T. O.
Title	Increase of reproducibility in production of superconducting thin films of niobium nitride			Type	Journal Article
Year	1992	Publication	Sverkhprovodimost': Fizika, Khimiya, Tekhnika	Abbreviated Journal	Sverkhprovodimost': Fizika, Khimiya, Tekhnika
Volume	5	Issue	10	Pages	1950-1954
Keywords	NbN films
Abstract	Technique to control the composition of gas medium in the reactive magnetron discharge and the composition of the deposited films of niobium nitride using electrical parameters of discharge only, in particular, by δU = Up – Uar value at contant stabilized discharge current is described. Technique to select optimal condition for deposition of niobium nitride films when the films have composition meeting chemical formula, is suggested. Thin films of niobium nitride with up to 7 nm thickness and with rather high temperature of transition into superconducting state Tk > 10 K) and with low width of transition (δ < 0.6 K), are obtained. It is determined, that substrate material and dielectric sublayer do not affect. Tk value, while difference in coefficients of thermal expansion of substrate and of film affects δTk value.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0131-5366	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1675
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Author	Danerud, M.; Winkler, D.; Lindgren, M.; Zorin, M.; Trifonov, V.; Karasik, B. S.; Gol’tsman, G. N.; Gershenzon, E. M.
Title	Nonequilibrium and bolometric photoresponse in patterned YBa₂Cu₃O_7−δ thin films			Type	Journal Article
Year	1994	Publication	J. Appl. Phys.	Abbreviated Journal	J. Appl. Phys.
Volume	76	Issue	3	Pages	1902-1909
Keywords	YBCO HTS HEB detector, nonequilibrium response
Abstract	Epitaxial laser deposited YBa2Cu3O7−δ films of ∼50 nm thickness were patterned into detectors consisting of ten parallel 1 μm wide strips in order to study nonequilibrium and bolometric effects. Typically, the patterned samples had critical temperatures around 86 K, transition widths around 2 K and critical current densities above 1×106A/cm2 at 77 K. Pulsed laser measurements at 0.8 μm wavelength (17 ps full width at half maximum) showed a ∼30 ps response, attributed to electron heating, followed by a slower bolometric decay. Amplitude modulation in the band fmod=100 kHz–10 GHz of a laser with wavelength λ=0.8 μm showed two different thermal relaxations in the photoresponse. Phonon escape from the film (∼3 ns) is the limiting process, followed by heat diffusion in the substrate. Similar relaxations were also seen for λ=10.6 μm. The photoresponse measurements were made with the film in the resistive state and extended into the normal state. These states were created by supercritical bias currents. Measurements between 75 and 95 K (i.e., from below to above Tc) showed that the photoresponse was proportional to dR/dT for fmod=1 MHz and 4 GHz. The fast response is limited by the electron‐phonon scattering time, estimated to 1.8 ps from experimental data. The responsivity both at 0.8 and 10.6 μm wavelength was ∼1.2 V/W at fmod=1 GHz and the noise equivalent power was calculated to 1.5×10−9 WHz−1/2 for the fast response.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0021-8979	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1637
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Author	Банная, В. Ф.; Веселова, Л. И.; Гершензон, Е. М.
Title	Об одном способе определения концентрации глубоких примесей в германии			Type	Journal Article
Year	1983	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	17	Issue	10	Pages	1896-1898
Keywords	Ge, deep impurities
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1762
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Author	Воеводин, Е. И.; Гершензон, Е. М.; Гольцман, Г. Н.; Птицина, Н. Г.
Title	Влияние магнитного поля на захват свободных носителей мелкими примесями в Ge			Type	Journal Article
Year	1990	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	24	Issue	10	Pages	1881-1883
Keywords	impurities, photoconductivity, Ge, capture of free carriers, magnetic field
Abstract	Цель настоящей работы — измерение кинетики примесной фотопроводимости в квантующих магнитных полях.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1755
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Author	Гершензон, Е. М.; Литвак-Горская, Л. Б.; Рабинович, Р. И.
Title	Отрицательное магнитосопротивление в случае проводимости по верхней зоне Хаббарда			Type	Journal Article
Year	1983	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	17	Issue	10	Pages	1873-1876
Keywords	compensated n-InSb, Hubbard upper zone conductivity, negative magnetoresistance
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1763
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Author	Zhang, Wen; Li, Ning; Jiang, Ling; Miao, Wei; Lin, Zhen-Hui; Yao, Qi-Jun; Shi, Sheng-Cai; Chen, Jian; Wu, Pei-Heng; Svechnikov, S. I.; Vachtomin, Y. B.; Antipov, S. V.; Voronov, B. M.; Gol'tsman, G. N.
Title	Noise behaviour of a THz superconducting hot-electron bolometer mixer			Type	Journal Article
Year	2007	Publication	Chinese Phys. Lett.	Abbreviated Journal	Chinese Phys. Lett.
Volume	24	Issue	6	Pages	1778-1781
Keywords	NbN HEB mixers
Abstract	A quasi-optical superconducting NbN hot-electron bolometer (HEB) mixer is measured in the frequency range of 0.5–2.5 THz for understanding of the frequency dependence of noise temperature of THz coherent detectors. It has been found that noise temperature increasing with frequency is mainly due to the coupling loss between the quasi-optical planar antenna and the superconducting HEB bridge when taking account of non-uniform distribution of high-frequency current. With the coupling loss corrected, the superconducting HEB mixer demonstrates a noise temperature nearly independent of frequency.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0256-307X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1430
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Author	Akhmadishina, K. F.; Bobrinetskiy, I. I.; Komarov, I. A.; Malovichko, A. M.; Nevolin, V. K.; Fedorov, G. E.; Golovin, A. V.; Zalevskiy, A. O.; Aidarkhanov, R. D.
Title	Fast-response biological sensors based on single-layer carbon nanotubes modified with specific aptamers			Type	Journal Article
Year	2015	Publication	Semicond.	Abbreviated Journal	Semicond.
Volume	49	Issue	13	Pages	1749-1753
Keywords	carbon nanotubes, CNT detectors
Abstract	The possibility of the fabrication of a fast-response biological sensor based on a composite of single-layer carbon nanotubes and aptamers for the specific detection of proteins is shown. The effect of modification of the surface of the carbon nanotubes on the selectivity and sensitivity of the sensors is investigated. It is shown that carboxylated nanotubes have a better selectivity for detecting thrombin.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7826	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1783
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Author	Smirnov, A. V.; Karmantsov, M. S.; Smirnov, K. V.; Vakhtomin, Y. B.; Masterov, D. V.; Tarkhov, M. A.; Pavlov, S. A.; Parafin, A. E.
Title	Terahertz response of thin-film YBCO bolometers			Type	Journal Article
Year	2012	Publication	Tech. Phys.	Abbreviated Journal	Tech. Phys.
Volume	57	Issue	12	Pages	1716-1719
Keywords	YBCO HEB
Abstract	The bolometric response of high-temperature thin-film YBCO superconducting detectors to an electromagnetic radiation with a frequency of 2.5 THz is measured for the first time. The minimum value of the noise-equivalent power of the detectors is 3.5 × 10−9 W/Hz−−−√. The feasibility of further increasing the sensitivity of the detectors is discussed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7842	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1817
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Author	Гершензон, Е. М.; Семенов, И. Т.; Фогельсон, М. С.
Title	Спин-решеточная релаксация доноров фосфора в кремнии при одноосной деформации образца			Type	Journal Article
Year	1985	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	19	Issue	9	Pages	1696-1698
Keywords	uniaxial pressure, Ge, phosphorus donors, spin-lattice relaxation
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1760
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Author	Lipatov, A.; Okunev, O.; Smirnov, K.; Chulkova, G.; Korneev, A.; Kouminov, P.; Gol'tsman, G.; Zhang, J.; Slysz, W.; Verevkin, A.; Sobolewski, R.
Title	An ultrafast NbN hot-electron single-photon detector for electronic applications			Type	Journal Article
Year	2002	Publication	Supercond. Sci. Technol.	Abbreviated Journal	Supercond. Sci. Technol.
Volume	15	Issue	12	Pages	1689-1692
Keywords	NbN SSPD, SNSPD, QE, jitter, dark counts
Abstract	We present the latest generation of our superconducting single-photon detector (SPD), which can work from ultraviolet to mid-infrared optical radiation wavelengths. The detector combines a high speed of operation and low jitter with high quantum efficiency (QE) and very low dark count level. The technology enhancement allows us to produce ultrathin (3.5 nm thick) structures that demonstrate QE hundreds of times better, at 1.55 μm, than previous 10 nm thick SPDs. The best, 10 × 10 μm2, SPDs demonstrate QE up to 5% at 1.55 μm and up to 11% at 0.86 μm. The intrinsic detector QE, normalized to the film absorption coefficient, reaches 100% at bias currents above 0.9 Ic for photons with wavelengths shorter than 1.3 μm.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0953-2048	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1533
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Author	Гольцман, Г. Н.; Птицина, Н. Г.; Ригер, Е. Р.
Title	Оже-рекомбинация свободных носителей на мелких донорах в германии			Type	Journal Article
Year	1984	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	18	Issue	9	Pages	1684-1686
Keywords	Ge, free carrier recombination
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1710
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Author	Goltsman, G.; Korneev, A.; Divochiy, A.; Minaeva, O.; Tarkhov, M.; Kaurova, N.; Seleznev, V.; Voronov, B.; Okunev, O.; Antipov, A.; Smirnov, K.; Vachtomin, Yu.; Milostnaya, I.; Chulkova, G.
Title	Ultrafast superconducting single-photon detector			Type	Journal Article
Year	2009	Publication	J. Modern Opt.	Abbreviated Journal	J. Modern Opt.
Volume	56	Issue	15	Pages	1670-1680
Keywords	SSPD, SNSPD
Abstract	The state-of-the-art of the NbN nanowire superconducting single-photon detector technology (SSPD) is presented. The SSPDs exhibit excellent performance at 2 K temperature: 30% quantum efficiency from visible to infrared, negligible dark count rate, single-photon sensitivity up to 5.6 µm. The recent achievements in the development of GHz counting rate devices with photon-number resolving capability is presented.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0950-0340	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number	RPLAB @ akorneev @			Serial	607
Permanent link to this record



Author	Kawamura, J.; Blundell, R.; Tong, C.-yu E.; Gol’tsman, G.; Gershenzon, E.; Voronov, B.; Cherednichenko, S.
Title	Low noise NbN lattice-cooled superconducting hot-electron bolometric mixers at submillimeter wavelengths			Type	Journal Article
Year	1997	Publication	Appl. Phys. Lett.	Abbreviated Journal	Appl. Phys. Lett.
Volume	70	Issue	12	Pages	1619-1621
Keywords	NbN HEB mixers
Abstract	Lattice-cooled superconducting hot-electron bolometric mixers are used in a submillimeter-wave waveguide heterodyne receiver. The mixer elements are niobium nitride film with 3.5 nm thickness and ∼10 μm2 area. The local oscillator power for optimal performance is estimated to be 0.5 μW, and the instantaneous bandwidth is 2.2 GHz. At an intermediate frequency centered at 1.4 GHz with 200 MHz bandwidth, the double sideband receiver noise temperature is 410 K at 430 GHz. The receiver has been used to detect molecular line emission in a laboratory gas cell.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0003-6951	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1599
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Author	Fedorov, G. E.; Stepanova, T. S.; Gazaliev, A. S.; Gaiduchenko, I. A.; Kaurova, N. S.; Voronov, B. M.; Goltzman, G. N.
Title	Asymmetric devices based on carbon nanotubes for terahertz-range radiation detection			Type	Journal Article
Year	2016	Publication	Semicond.	Abbreviated Journal	Semicond.
Volume	50	Issue	12	Pages	1600-1603
Keywords	carbon nanotubes, CNT detectors
Abstract	Various asymmetric detecting devices based on carbon nanotubes (CNTs) are studied. The asymmetry is understood as inhomogeneous properties along the conducting channel. In the first type of devices, an inhomogeneous morphology of the CNT grid is used. In the second type of devices, metals with highly varying work functions are used as the contact material. The relation between the sensitivity and detector configuration is analyzed. Based on the data obtained, approaches to the development of an efficient detector of terahertz radiation, based on carbon nanotubes are proposed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7826	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1776
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Author	Gershenzon, E. M.; Gol'tsman, G. N.; Gogidze, I. G.; Gusev, Yu. P.; Elantiev, A. I.; Karasik, B. S.; Semenov, A. D.
Title	Millimeter and submillimeter wave range mixer based on electronic heating of superconducting films in the resistive state			Type	Journal Article
Year	1990	Publication	Sov. Supercond.	Abbreviated Journal	Sov. Supercond.
Volume	3	Issue	10	Pages	1582-1597
Keywords	HEB mixers
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	240
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Author	Shein, K. V.; Zarudneva, A. A.; Emel’yanova, V. O.; Logunova, M. A.; Chichkov, V. I.; Sobolev, A.S.; Zav’yalov, V. V.; Lehtinen, J. S.; Smirnov, E. O.; Korneeva, Y. P.; Korneev, A. A.; Arutyunov, K. Y.
Title	Superconducting microstructures with high impedance			Type	Journal Article
Year	2020	Publication	Phys. Solid State	Abbreviated Journal	Phys. Solid State
Volume	62	Issue	9	Pages	1539-1542
Keywords	superconducting channels, SIS, inetic inductance, tunneling contacts, high impedance
Abstract	The transport properties of two types of quasi-one-dimensional superconducting microstructures were investigated at ultra-low temperatures: the narrow channels close-packed in the shape of meander, and the chains of tunneling contacts “superconductor-insulator-superconductor.” Both types of the microstructures demonstrated high value of high-frequency impedance and-or the dynamic resistance. The study opens up potential for using of such structures as current stabilizing elements with zero dissipation.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7834	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1789
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Author	Gol'tsman, G. N.; Korneev, A.; Rubtsova, I.; Milostnaya, I.; Chulkova, G.; Minaeva, O.; Smirnov, K.; Voronov, B.; Słysz, W.; Pearlman, A.; Verevkin, A.; Sobolewski, R.
Title	Ultrafast superconducting single-photon detectors for near-infrared-wavelength quantum communications			Type	Journal Article
Year	2005	Publication	Phys. Stat. Sol. (C)	Abbreviated Journal	Phys. Stat. Sol. (C)
Volume	2	Issue	5	Pages	1480-1488
Keywords	NbN SSPD, SNSPD
Abstract	We present our progress on the research and development of NbN superconducting single‐photon detectors (SSPD's) for ultrafast counting of near‐infrared photons for secure quantum communications. Our SSPD's operate in the quantum detection mode based on the photon‐induced hotspot formation and subsequent development of a transient resistive barrier across an ultrathin and submicron‐width superconducting stripe. The devices are fabricated from 4‐nm‐thick NbN films and kept in the 4.2‐ to 2‐K temperature range. The detector experimental quantum efficiency in the photon‐counting mode reaches above 40% for the visible light and up to 30% in the 1.3‐ to 1.55‐µm wavelength range with dark counts below 0.01 per second. The experimental real‐time counting rate is above 2 GHz and is limited by our readout electronics. The SSPD's timing jitter is below 18 ps, and the best‐measured value of the noise‐equivalent power (NEP) is 5 × 10–21 W/Hz1/2 at 1.3 µm. In terms of quantum efficiency, timing jitter, and maximum counting rate, our NbN SSPD's significantly outperform semiconductor avalanche photodiodes and photomultipliers in the 1.3‐ to 1.55‐µm range.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1610-1634	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1479
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Author	Шангина, Е. Л.; Смирнов, К. В.; Морозов, Д. В.; Ковалюк, В. В.; Гольцман, Г. Н.; Веревкин, А. А.; Торопов, А. И.
Title	Полоса и потери преобразования полупроводникового смесителя с фононным каналом охлаждения двумерных электронов			Type	Journal Article
Year	2010	Publication	Физика и техника полупроводников	Abbreviated Journal
Volume	44	Issue	11	Pages	1475-1478
Keywords	2DEG, AlGaAs/GaAs heterostructures mixers
Abstract	Методом субмиллиметровой спектроскопии с высоким временным разрешением измерены температурная и концентрационная зависимости полосы преобразования смесителей терагерцового диапазона AlGaAs/GaAs на разогреве двумерных электронов с фононным каналом их охлаждения. Полоса преобразования на уровне 3 дБ (f3 dB) при 4.2 K при изменении концентрации ns варьируется в пределах 150-250 МГц в соответствии со степенным законом f3 dB propto ns-0.5, что соответствует доминирующему механизму рассеяния на пьезоэлектрических фононах. Минимальное значение коэффициента потерь преобразования полупроводникового смесителя достигается в структурах с высокой подвижностью носителей mu>3·105 см2/В·с при 4.2 K.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes	Duplicated as 1216			Approved	no
Call Number	RPLAB @ gujma @			Serial	702
Permanent link to this record



Author	Verevkin, A.; Pearlman, A.; Slysz, W.; Zhang, J.; Currie, M.; Korneev, A.; Chulkova, G.; Okunev, O.; Kouminov, P.; Smirnov, K.; Voronov, B.; Gol'tsman, G. N.; Sobolewski, R.
Title	Ultrafast superconducting single-photon detectors for near-infrared-wavelength quantum communications			Type	Journal Article
Year	2004	Publication	J. Modern Opt.	Abbreviated Journal	J. Modern Opt.
Volume	51	Issue	9-10	Pages	1447-1458
Keywords	NbN SSPD, SNSPD
Abstract	The paper reports progress on the design and development of niobium-nitride, superconducting single-photon detectors (SSPDs) for ultrafast counting of near-infrared photons for secure quantum communications. The SSPDs operate in the quantum detection mode, based on photon-induced hotspot formation and subsequent appearance of a transient resistive barrier across an ultrathin and submicron-width superconducting stripe. The devices are fabricated from 3.5 nm thick NbN films and kept at cryogenic (liquid helium) temperatures inside a cryostat. The detector experimental quantum efficiency in the photon-counting mode reaches above 20% in the visible radiation range and up to 10% at the 1.3–1.55 μn infrared range. The dark counts are below 0.01 per second. The measured real-time counting rate is above 2 GHz and is limited by readout electronics (the intrinsic response time is below 30 ps). The SSPD jitter is below 18 ps, and the best-measured value of the noise-equivalent power (NEP) is 2 × 10−18 W/Hz1/2. at 1.3 μm. In terms of photon-counting efficiency and speed, these NbN SSPDs significantly outperform semiconductor avalanche photodiodes and photomultipliers.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0950-0340	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1488
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Author	Semenov, A. D.; Sergeev, A. V.; Kouminov, P.; Goghidze, I. G.; Heusinger, M. A.; Nebosis, R. S.; Gol'tsman, G. N.; Gershenzon, E. M.; Renk, K. F.
Title	Transparency of YBCO film/substrate interfaces for thermal phonons determined by photoresponse measurements			Type	Conference Article
Year	1993	Publication	Proc. 1st European Conf. on Appl. Supercond.	Abbreviated Journal	Proc. 1st European Conf. on Appl. Supercond.
Volume	2	Issue		Pages	1443-1446
Keywords	YBCO HTS detectors
Abstract	Direct measurements of the thermal boundary resistance were performed by means of the stationary method. In this approach the temperature of an electrically heated film is controlled by its dc resistance while an additional film on the same substrate is used as a thermometer monitoring substrate temperature. The temperature field in the substrate is then calculated to deduce the Kapitza temperature step at the interface between the heated strip and the substrate. The main statement of all afore-said papers is that experimental values of the thermal boundary resistance are too large to be explained by the acoustic mismatch model. In this paper we investigate transparency of YBaCuO film/substrate interfaces for thermal phonons by means of photoresponse measurements. We show that our data are in reasonable agreement with the acoustic mismatch theory.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor	Freyhardt, H. C.
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN	3-88355-197-X	Medium
Area		Expedition		Conference	1st European conference on applied superconductivity
Notes				Approved	no
Call Number				Serial	1661
Permanent link to this record



Author	Гершензон, Е. М.; Гольцман, Г. Н.; Елантьев, А. И.; Кагане, М. Л.; Мултановский, В. В.; Птицина, Н. Г.
Title	Применение субмиллиметровой ЛОВ спектроскопии для определения химической природы и концентрации примесей в чистых полупроводниках			Type	Journal Article
Year	1983	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	17	Issue	8	Pages	1430-1437
Keywords	BWO spectroscopy, pure semiconductors, residual impurities
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes	Duplicated as 1714			Approved	no
Call Number				Serial	1712
Permanent link to this record



Author	Lobanov, Yury; Shcherbatenko, Michael; Shurakov, Alexander; Rodin, Alexander V.; Klimchuk, Artem; Nadezhdinsky, Alexander I.; Maslennikov, Sergey; Larionov, Pavel; Finkel, Matvey; Semenov, Alexander; Verevkin, Aleksandr A.; Voronov, Boris M.; Ponurovsky, Yakov; Klapwijk, Teunis M.; Gol'tsman, Gregory N.
Title	Heterodyne detection at near-infrared wavelengths with a superconducting NbN hot-electron bolometer mixer			Type	Journal Article
Year	2014	Publication	Opt. Lett.	Abbreviated Journal
Volume	39	Issue	6	Pages	1429-1432
Keywords	HEB, zebra, IR, infrared
Abstract	We report on the development of a highly sensitive optical receiver for heterodyne IR spectroscopy at the communication wavelength of 1.5 μm (200 THz) by use of a superconducting hot-electron bolometer. The results are important for the resolution of narrow spectral molecular lines in the near-IR range for the study of astronomical objects, as well as for quantum optical tomography and fiber-optic sensing. Receiver configuration as well as fiber-to-detector light coupling designs are discussed. Light absorption of the superconducting detectors was enhanced by nano-optical antennas, which were coupled to optical fibers. An intermediate frequency (IF) bandwidth of about 3 GHz was found in agreement with measurements at 300 GHz, and a noise figure of about 25 dB was obtained that was only 10 dB above the quantum limit.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	906
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Author	Shangina, E. L.; Smirnov, K. V.; Morozov, D. V.; Kovalyuk, V. V.; Gol’tsman, G. N.; Verevkin, A. A.; Toropov, A. I.
Title	Frequency bandwidth and conversion loss of a semiconductor heterodyne receiver with phonon cooling of two-dimensional electrons			Type	Journal Article
Year	2010	Publication	Semicond.	Abbreviated Journal	Semicond.
Volume	44	Issue	11	Pages	1427-1429
Keywords	2DEG, AlGaAs/GaAs heterostructures mixers
Abstract	The temperature and concentration dependences of the frequency bandwidth of terahertz heterodyne AlGaAs/GaAs detectors based on hot electron phenomena with phonon cooling of two-dimensional electrons have been measured by submillimeter spectroscopy with a high time resolution. At a temperature of 4.2 K, the frequency bandwidth at a level of 3 dB (f 3 dB) is varied from 150 to 250 MHz with a change in the concentration n s according to the power law f 3dB ∝ n −0.5 s due to the dominant contribution of piezoelectric phonon scattering. The minimum conversion loss of the semiconductor heterodyne detector is obtained in structures with a high carrier mobility (μ > 3 × 105 cm2 V−1 s−1 at 4.2 K).
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7826	ISBN		Medium
Area		Expedition		Conference
Notes	Полоса и потери преобразования полупроводникового смесителя с фононным каналом охлаждения двумерных электронов			Approved	no
Call Number				Serial	1216
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Author	Trifonov, V. A.; Karasik, B. S.; Zorin, M. A.; Gol’tsman, G. N.; Gershenzon, E. M.; Lindgren, M.; Danerud, M.; Winkler, D.
Title	9.6 μm wavelength mixing in a patterned YBa₂Cu₃O_7‐δ thin film			Type	Journal Article
Year	1996	Publication	Appl. Phys. Lett.	Abbreviated Journal	Appl. Phys. Lett.
Volume	68	Issue	10	Pages	1418-1420
Keywords	YBCO HTS HEB mixers
Abstract	Hot‐electron bolometric (HEB) mixing of 9.6 μm infrared radiation from two lasers in high‐quality YBa2Cu3O7−δ (YBCO) patterned thin film has been demonstrated. A heterodyne measurement showed an intermediate frequency (IF) bandwidth of 18 GHz, limited by our measurement system. An intrinsic limit of 100 GHz is predicted. Between 0.1 and 1 GHz intermediate frequency, temperature fluctuations with an equivalent output noise temperature Tfl up to ∼150 K, contributed to the mixer noise while Johnson noise dominated above 1 GHz. The overall conversion loss at 77 K at low intermediate frequencies was measured to be ∼25 dB, of which 13 dB was due to the coupling loss. The HEB mixer is very promising for use in heterodyne receivers within the whole infrared range.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0003-6951	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1613
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Author	Blagosklonskaya, L. E.; Gershenzon, E. M.; Gol’tsman, G. N.; Elant’ev, A. I.
Title	Effect of a strong magnetic field on the spectrum of donors in InSb			Type	Journal Article
Year	1978	Publication	Sov. Phys. Semicond.	Abbreviated Journal	Sov. Phys. Semicond.
Volume	11	Issue	12	Pages	1395-1397
Keywords	InSb, spectrum of donors, strong magnetic field
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1725
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Author	Gershenzon, E. M.; Gurvich, Y. A.; Orlova, S. L.; Ptitsina, N. G.
Title	Scattering of electrons by charged impurities in Ge under cyclotron resonance conditions			Type	Journal Article
Year	1976	Publication	Presumably: Sov. Phys. Semicond. \| Физика и техника полупроводников	Abbreviated Journal	Presumably: Sov. Phys. Semicond. \| Физика и техника полупроводников
Volume	10	Issue		Pages	1379-1383
Keywords	Ge, cyclotron resonance, charged impurities,
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1772
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Author	Gershenzon, E. M.; Gol'tsman, G. N.; Gogidze, I. G.; Semenov, A. D.; Sergeev, A. V.
Title	Processes of electron-phonon interaction in thin YBaCuO films			Type	Journal Article
Year	1991	Publication	Phys. C: Supercond.	Abbreviated Journal	Phys. C: Supercond.
Volume	185-189	Issue		Pages	1371-1372
Keywords	YBCO HTS detectors
Abstract	The ultrafast voltage response of YBaCuO films to laser radiation is studied and compared with previously investigated quasiparicles response to radiation of submillimeter wavelength range. Voltage shift under the visible light radiation has two components. Picosecond response realized as suppression superconductivity by nonequilibrium excess quasiparticles, response time is determined by quasiparticles recombination rate. Nanosecond response is probably due to bolometric effect.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0921-4534	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1676
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Author	Воеводин, Е. И.; Гершензон, Е. М.; Гольцман, Г. Н.; Птицина, Н. Г.
Title	Энергетический спектр мелких акцепторов в сильно одноосно деформированном Ge			Type	Journal Article
Year	1989	Publication	Физика и техника полупроводников	Abbreviated Journal	Физика и техника полупроводников
Volume	23	Issue	8	Pages	1356-1361
Keywords	Ge, crystallography
Abstract	Проведены исследования спектров фототермической ионизации мелких акцепторов (В, Аl) в Ge, предельно сжатом вдоль кристаллографической оси [100]. Из данных измерений с учетом теории построен энергетический спектр примесей. Показано, что энергии большого числа уровней четных и нечетных состояний хорошо соответствуют расчету, выполненному для примесей в анизотропном полупроводнике с параметром анизотропии γ=m∗⊥/m∗∥>1.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes	Duplicated as 1692			Approved	no
Call Number				Serial	1691
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Author	Gousev, Y. P.; Semenov, A. D.; Gol'tsman, G. N.; Sergeev, A. V.; Gershenzon, E. M.
Title	Electron-phonon interaction in disordered NbN films			Type	Journal Article
Year	1994	Publication	Phys. B Condens. Mat.	Abbreviated Journal	Phys. B Condens. Mat.
Volume	194-196	Issue		Pages	1355-1356
Keywords	NbN films
Abstract	Electron-phonon interaction time has been investigated in disordered films of NbN. A temperatures below 5.5 K tau_eph ~ T -1"6 which is attributed to the renormalisation of phonon spectrum in thin films.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0921-4526	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1649
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Author	Gershenzon, E. M.; Goltsman, G.; Orlova, S.; Ptitsina, N.; Gurvich, Y.
Title	Germanium hot-electron narrow-band detector			Type	Journal Article
Year	1971	Publication	Sov. Radio Engineering And Electronic Physics	Abbreviated Journal	Sov. Radio Engineering And Electronic Physics
Volume	16	Issue	8	Pages	1346
Keywords	Ge HEB detectors
Abstract
Address
Corporate Author				Thesis
Publisher	Scripps Clinic Res Foundation 476 Prospect St, La Jolla, Ca 92037	Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1741
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Author	Milostnaya, I.; Korneev, A.; Rubtsova, I.; Seleznev, V.; Minaeva, O.; Chulkova, G.; Okunev, O.; Voronov, B.; Smirnov, K.; Gol'tsman, G.; Slysz, W.; Wegrzecki, M.; Guziewicz, M.; Bar, J.; Gorska, M.; Pearlman, A.; Kitaygorsky, J.; Cross, A.; Sobolewski, R.
Title	Superconducting single-photon detectors designed for operation at 1.55-µm telecommunication wavelength			Type	Conference Article
Year	2006	Publication	J. Phys.: Conf. Ser.	Abbreviated Journal	J. Phys.: Conf. Ser.
Volume	43	Issue		Pages	1334-1337
Keywords	NbN SSPD, SNSPD
Abstract	We report on our progress in development of superconducting single-photon detectors (SSPDs), specifically designed for secure high-speed quantum communications. The SSPDs consist of NbN-based meander nanostructures and operate at liquid helium temperatures. In general, our devices are capable of GHz-rate photon counting in a spectral range from visible light to mid-infrared. The device jitter is 18 ps and dark counts can reach negligibly small levels. The quantum efficiency (QE) of our best SSPDs for visible-light photons approaches a saturation level of ~30-40%, which is limited by the NbN film absorption. For the infrared range (1.55µm), QE is ~6% at 4.2 K, but it can be significantly improved by reduction of the operation temperature to the 2-K level, when QE reaches ~20% for 1.55-µm photons. In order to further enhance the SSPD efficiency at the wavelength of 1.55 µm, we have integrated our detectors with optical cavities, aiming to increase the effective interaction of the photon with the superconducting meander and, therefore, increase the QE. A successful effort was made to fabricate an advanced SSPD structure with an optical microcavity optimized for absorption of 1.55 µm photons. The design consisted of a quarter-wave dielectric layer, combined with a metallic mirror. Early tests performed on relatively low-QE devices integrated with microcavities, showed that the QE value at the resonator maximum (1.55-µm wavelength) was of the factor 3-to-4 higher than that for a nonresonant SSPD. Independently, we have successfully coupled our SSPDs to single-mode optical fibers. The completed receivers, inserted into a liquid-helium transport dewar, reached ~1% system QE for 1.55 µm photons. The SSPD receivers that are fiber-coupled and, simultaneously, integrated with resonators are expected to be the ultimate photon counters for optical quantum communications.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1742-6588	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1450
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Author	Pernice, W. H. P.; Schuck, C.; Minaeva, O.; Li, M.; Goltsman, G. N.; Sergienko, A. V.; Tang, H. X.
Title	High-speed and high-efficiency travelling wave single-photon detectors embedded in nanophotonic circuits			Type	Journal Article
Year	2012	Publication	Nat. Commun.	Abbreviated Journal	Nat. Commun.
Volume	3	Issue		Pages	1325 (1 to 10)
Keywords	waveguide SSPD
Abstract	Ultrafast, high-efficiency single-photon detectors are among the most sought-after elements in modern quantum optics and quantum communication. However, imperfect modal matching and finite photon absorption rates have usually limited their maximum attainable detection efficiency. Here we demonstrate superconducting nanowire detectors atop nanophotonic waveguides, which enable a drastic increase of the absorption length for incoming photons. This allows us to achieve high on-chip single-photon detection efficiency up to 91% at telecom wavelengths, repeatable across several fabricated chips. We also observe remarkably low dark count rates without significant compromise of the on-chip detection efficiency. The detectors are fully embedded in scalable silicon photonic circuits and provide ultrashort timing jitter of 18 ps. Exploiting this high temporal resolution, we demonstrate ballistic photon transport in silicon ring resonators. Our direct implementation of a high-performance single-photon detector on chip overcomes a major barrier in integrated quantum photonics.
Address	Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2041-1723	ISBN		Medium
Area		Expedition		Conference
Notes	PMID:23271658; PMCID:PMC3535416			Approved	no
Call Number				Serial	1375
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Author	Gershenzon, E. M.; Gol’tsman, G. N.; Semenov, A. D.; Sergeev, A. V.
Title	Mechanism of picosecond response of granular YBaCuO films to electromagnetic radiation			Type	Journal Article
Year	1991	Publication	IEEE Trans. Magn.	Abbreviated Journal	IEEE Trans. Magn.
Volume	27	Issue	2	Pages	1321-1324
Keywords	YBCO HTS detectors
Abstract	Ultrafast mechanisms of radiation detection in granular YBaCuO films are studied in the wide wavelength range from millimeter waves to near infrared. With an increase in radiation frequency, the Josephson detection at the grain-boundary weak links is replaced by electron heating into the grains. This change occurs in the submillimeter wavelength range. The electron-phonon relaxation time tau /sub eph/ is determined from direct measurements, quasi-stationary electron heating measurements, and the frequency dependence of the current at which maximum voltage shift is observed. The temperature dependence of tau /sub eph/ at T<or=40 K was found to be tau /sub eph/ approximately T/sup -1/. The results show that detectors with a response time of a few picoseconds at nitrogen temperature are attainable.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1941-0069	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1679
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Author	Gershenzon, E. M.; Gol’tsman, G. N.; Gousev, Y. P.; Elant’ev, A. I.; Semenov, A. D.
Title	Electromagnetic radiation mixer based on electron heating in resistive state of superconductive Nb and YBaCuO films			Type	Journal Article
Year	1991	Publication	IEEE Trans. Magn.	Abbreviated Journal	IEEE Trans. Magn.
Volume	27	Issue	2	Pages	1317-1320
Keywords	YBCO, HTS, Nb HEB mixers
Abstract	A theory of an electron-heating mixer which makes it possible to calculate all the characteristics of the device is developed. It is shown that positive conversion gain is possible for such a mixer in the millimeter to near-infrared wavelength range. The dynamic range and the optimum heterodyne power can be selected from a very wide interval by varying the mixing element volume. Measurements made for Nb within the frequency range of 120-750 GHz confirm the theory. The conversion loss obtained at T=1.6 K and normalized to the element reaches 0.3 dB in the intermediate frequency band of 40 MHz; the possible noise temperature is 50 K. The estimation of noise temperature and output band for YBaCuO at T=77 yields 200 K and more than 10 GHz, respectively.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1941-0069	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1681
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Author	Varyukhin, S. V.; Zakharov, A. A.; Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsyna, N. G.; Chulkova, G. M.
Title	AC losses and submillimeter absorption in single crystals La2CuO4			Type	Journal Article
Year	1990	Publication	Phys. B Condens. Mat.	Abbreviated Journal	Phys. B Condens. Mat.
Volume	165-166	Issue		Pages	1269-1270
Keywords	metal-dielectric-La2Cu04
Abstract	The La2CuO4 single crystals were used to carry out the measurements of transmission spectra within the submillimeter range of wavelengths, as well as the capacitance C and conductivity G in the region of acoustic frequencies of the metal-dielectric-La2Cu04 system at low temperatures. The optical spectra display a threshold character. There takes place a sharp decreasing of transmission signal in the energy range of hυ>1.5meV. The C(ω,T) and G(ω,T) dependences have a universal form characteristic of relaxation processes of the Debye type. The relaxation time dependence displays a thermoactivation character τ(T)-exp(ξ/T) with a gap value of ξ≃2meV,coinciding with the optical one. It is assumed that there exist excitations with a characteristic energy ~ 2meV in La2Cu04.A possible nature of the revealed low-energy excitations is discussed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0921-4526	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1686
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Author	Gershenzon, E. M.; Goltsman, G. N.; Ptitsyna, N. G.
Title	Investigation of excited donor states in GaAs			Type	Journal Article
Year	1974	Publication	Sov. Phys. Semicond.	Abbreviated Journal	Sov. Phys. Semicond.
Volume	7	Issue	10	Pages	1248-1250
Keywords	GaAs, excited donor states
Abstract
Address
Corporate Author				Thesis
Publisher	Amer Inst Physics 1305 Walt Whitman Rd, Ste 300, Melville, Ny 11747-4501 Usa	Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1733
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Author	Gol'tsman, G. N.; Gusinskii, E. N.; Malyavkin, A. V.; Ptitsina, N. G.; Selevko, A. G.; Edel'shtein, V. M.
Title	The excitonic Zeeman effect in uniaxially-strained germanium			Type	Journal Article
Year	1987	Publication	Sov. Phys. JETP	Abbreviated Journal	Sov. Phys. JETP
Volume	65	Issue	6	Pages	1233-1241
Keywords	Ge, Zeeman effect
Abstract	We have carried out a high-resolution spectroscopic study of the absorption of submillimeter radiation by free excitons in germanium compressed along the [ 1 11 ] axis in a magnetic field parallel to the compression axis. In particular, we studied the splitting of the 1s- 2p transition in fields up to 6 kOe at T = 1.6 K, and observed a complex pattern in the Zeeman splitting which we believe is related to the effect of thermal motion of the excitons in a magnetic field on their internal structure (the magneto-Stark effect). The calculated submillimeter spectrum of excitons agrees with the experimental data. We predict that in a magnetic field the energy of the 2p, term is a minimum at a finite value of the exciton momentum perpendicular to the field-that is, the energy minimum forms a ring in momentum space. It follows that the density of states for this term must be a nonmonotonic function of the energy. A theory is developed of analogous phenomena in positronium.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1705
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Author	Blagosklonskaya, L. E.; Gershenzon, E. M.; Goltsman, G. N.; Elantev, A. I.
Title	Effect of strong magnetic-field on spectrum of hydrogen-like admixtures in semiconductors			Type	Conference Article
Year	1978	Publication	Izv. Akad. Nauk SSSR, Seriya Fizicheskaya	Abbreviated Journal	Izv. Akad. Nauk SSSR, Seriya Fizicheskaya
Volume	42	Issue	6	Pages	1231-1234
Keywords	spectrum, semiconductors, admixtures, strong magnetic-field
Abstract
Address
Corporate Author				Thesis
Publisher	Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia	Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number	blagosklonskaya1978effect			Serial	1724
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Author	Morozov, P.; Lukina, M.; Shirmanova, M.; Divochiy, A.; Dudenkova, V.; Gol'tsman, G. N.; Becker, W.; Shcheslavskiy, V. I.
Title	Singlet oxygen phosphorescence imaging by superconducting single-photon detector and time-correlated single-photon counting			Type	Journal Article
Year	2021	Publication	Opt. Lett.	Abbreviated Journal	Opt. Lett.
Volume	46	Issue	6	Pages	1217-1220
Keywords	SSPD, SNSPD, applications
Abstract	This Letter presents, to the best of our knowledge, a novel optical configuration for direct time-resolved measurements of luminescence from singlet oxygen, both in solutions and from cultured cells on photodynamic therapy. The system is based on the superconducting single-photon detector, coupled to the confocal scanner that is modified for the near-infrared measurements. The recording of a phosphorescence signal from singlet oxygen at 1270 nm has been done using time-correlated single-photon counting. The performance of the system is verified by measuring phosphorescence from singlet oxygen generated by the photosensitizers commonly used in photodynamic therapy: methylene blue and chlorin e6. The described system can be easily upgraded to the configuration when both phosphorescence from singlet oxygen and fluorescence from the cells can be detected in the imaging mode. Thus, co-localization of the signal from singlet oxygen with the areas inside the cells can be done.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	English	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0146-9592	ISBN		Medium
Area		Expedition		Conference
Notes	PMID:33720151			Approved	no
Call Number				Serial	1221
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Author	Kitaeva, G. K.; Kornienko, V. V.; Kuznetsov, K. A.; Pentin, I. V.; Smirnov, K. V.; Vakhtomin, Y. B.
Title	Direct detection of the idler THz radiation generated by spontaneous parametric down-conversion			Type	Journal Article
Year	2019	Publication	Opt. Lett.	Abbreviated Journal	Opt. Lett.
Volume	44	Issue	5	Pages	1198-1201
Keywords	HEB applications
Abstract	We study parametric down-conversion (PDC) of optical laser radiation in the strongly frequency non-degenerate regime which is promising for the generation of quantum-correlated pairs of extremely different spectral ranges, the optical and the terahertz (THz) ones. The possibility to detect tenuous THz-frequency photon fluxes generated under low-gain spontaneous PDC is demonstrated using a hot electron bolometer. Then experimental dependences of the THz radiation power on the detection angle and on the pump intensity are analyzed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0146-9592	ISBN		Medium
Area		Expedition		Conference
Notes	PMID:30821747			Approved	no
Call Number				Serial	1801
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Author	Gershenzon, E.; Goltsman, G.; Orlov, L.; Ptitsina, N.
Title	Population of excited-states of small admixtures in germanium			Type	Conference Article
Year	1978	Publication	Izv. Akad. Nauk SSSR, Seriya Fizicheskaya	Abbreviated Journal	Izv. Akad. Nauk SSSR, Seriya Fizicheskaya
Volume	42	Issue	6	Pages	1154-1159
Keywords	Ge, excited states, admixtures
Abstract
Address
Corporate Author				Thesis
Publisher	Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia	Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1723
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Author	Sobolewski, R.; Verevkin, A.; Gol'tsman, G.N.; Lipatov, A.; Wilsher, K.
Title	Ultrafast superconducting single-photon optical detectors and their applications			Type	Journal Article
Year	2003	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal
Volume	13	Issue	2	Pages	1151-1157
Keywords	NbN SSPD, SNSPD
Abstract	We present a new class of ultrafast single-photon detectors for counting both visible and infrared photons. The detection mechanism is based on photon-induced hotspot formation, which forces the supercurrent redistribution and leads to the appearance of a transient resistive barrier across an ultrathin, submicrometer-width, superconducting stripe. The devices were fabricated from 3.5-nm- and 10-nm-thick NbN films, patterned into <200-nm-wide stripes in the 4 /spl times/ 4-/spl mu/m/sup 2/ or 10 /spl times/ 10-/spl mu/m/sup 2/ meander-type geometry, and operated at 4.2 K, well below the NbN critical temperature (T/sub c/=10-11 K). Continuous-wave and pulsed-laser optical sources in the 400-nm-to 3500-nm-wavelength range were used to determine the detector performance in the photon-counting mode. Experimental quantum efficiency was found to exponentially depend on the photon wavelength, and for our best, 3.5-nm-thick, 100-/spl mu/m/sup 2/-area devices varied from >10% for 405-nm radiation to 3.5% for 1550-nm photons. The detector response time and jitter were /spl sim/100 ps and 35 ps, respectively, and were acquisition system limited. The dark counts were below 0.01 per second at optimal biasing. In terms of the counting rate, jitter, and dark counts, the NbN single-photon detectors significantly outperform their semiconductor counterparts. Already-identified applications for our devices range from noncontact testing of semiconductor CMOS VLSI circuits to free-space quantum cryptography and communications.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1051-8223	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	509
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Author	Gershenzon, E.; Goltsman, G.; Elantev, A.; Kagane, M.
Title	Energy-spectrum of small donors and acceptors in germanium and effect of magnetic-field on it			Type	Conference Article
Year	1978	Publication	Izv. Akad. Nauk SSSR, Seriya Fizicheskaya	Abbreviated Journal	Izv. Akad. Nauk SSSR, Seriya Fizicheskaya
Volume	42	Issue	6	Pages	1142-1148
Keywords	energy spectrum, Ge, magnetic field
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1722
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Author	Gershenzon, E. M.; Gol'tsman, G. N.; Karasik, B. S.; Lugovaya, G. Ya.; Serebryakova, N. A.; Chinkova, E. V.
Title	Infrared radiation detectors on the base of electron heating in resistive state films from traditional superconducing materials			Type	Journal Article
Year	1992	Publication	Sverkhprovodimost': Fizika, Khimiya, Tekhnika	Abbreviated Journal	Sverkhprovodimost': Fizika, Khimiya, Tekhnika
Volume	5	Issue	6	Pages	1129-1140
Keywords	IR HEB detectors
Abstract	Characteristics of infrared radiation detectors based on electron heating in thin superconducting films transformed at T ≤ Tc to a resistive state by transport current and, if necessary, by magnetic field are investigated. A comparison is made of the characteristics of the detectors fabricated of different materials: aluminium, niobium, Mo0.5Re0.5. Some devices with different topology of the reception area are considered. Electron heating detectors are comparable by their sensitivity with superconducting bolometers, but differ in a high fast-response.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0131-5366	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1673
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Author	Tret’yakov, I. V.; Ryabchun, S. A.; Kaurova, N. S.; Larionov, P. A.; Lobastova, A. A.; Voronov, B. M.; Finkel, M. I.; Gol’tsman, G. N.
Title	Optimum absorbed heterodyne power for superconducting NbN hot-electron bolometer mixer			Type	Journal Article
Year	2010	Publication	Tech. Phys. Lett.	Abbreviated Journal	Tech. Phys. Lett.
Volume	36	Issue	12	Pages	1103-1105
Keywords	NbN HEB mixer
Abstract	Absorbed heterodyne power has been measured in a low-noise broadband hot-electron bolometer (HEB) mixer for the terahertz range, operating on the effect of electron heating in the resistive state of an ultrathin superconducting NbN film. It is established that the optimum absorbed heterodyne power for the HEB mixer operating at 2.5 THz is about 100 nW.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7850	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1389
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Author	Voronov, B. M.; Gershenzon, E. M.; Gol'tsman, G. N.; Gubkina, T. O.; Semash, V. D.
Title	Superconductive properties of ultrathin NbN films on different substrates			Type	Journal Article
Year	1994	Publication	Sverkhprovodimost': Fizika, Khimiya, Tekhnika	Abbreviated Journal	Sverkhprovodimost': Fizika, Khimiya, Tekhnika
Volume	7	Issue	6	Pages	1097-1102
Keywords	NbN films
Abstract	A study was made on dependence of surface resistance, critical temperature and width of superconducting transition on application temperature and thickness of NbN films, which varied within the range of 3-10 nm. Plates of sapphire, fused and monocrystalline quartz, MgO, as well as Si and silicon oxide were used as substrates. NbN films with 160 μθ·cm specific resistance and 16.5 K (Tc) critical temperature were obtained on sapphire substrates. Intensive growth of ΔTc was noted for films, applied on fused quartz, with increase of precipitation temperature. This is explained by occurrence of high tensile stresses in NbN films, caused by sufficient difference of thermal coefficients of expansion of NbN and quartz.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0131-5366	ISBN		Medium
Area		Expedition		Conference
Notes	Сверхпроводниковые свойства ультратонких пленок NbN на различных подложках			Approved	no
Call Number				Serial	1631
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Author	Zhang, J.; Boiadjieva, N.; Chulkova, G.; Deslandes, H.; Gol'tsman, G. N.; Korneev, A.; Kouminov, P.; Leibowitz, M.; Lo, W.; Malinsky, R.; Okunev, O.; Pearlman, A.; Slysz, W.; Smirnov, K.; Tsao, C.; Verevkin, A.; Voronov, B.; Wilsher, K.; Sobolewski, R.
Title	Noninvasive CMOS circuit testing with NbN superconducting single-photon detectors			Type	Journal Article
Year	2003	Publication	Electron. Lett.	Abbreviated Journal	Electron. Lett.
Volume	39	Issue	14	Pages	1086-1088
Keywords	NbN SSPD, SNSPD, applications
Abstract	The 3.5 nm thick-film, meander-structured NbN superconducting single-photon detectors have been implemented in the CMOS circuit-testing system based on the detection of near-infrared photon emission from switching transistors and have significantly improved the performance of the system. Photon emissions from both p- and n-MOS transistors have been observed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0013-5194	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1512
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Author	Morozov, D. V.; Smirnov, K. V.; Smirnov, A. V.; Lyakhov, V. A.; Goltsman, G. N.
Title	A millimeter-submillimeter phonon-cooled hot-electron bolometer mixer based on two-dimensional electron gas in an AlGaAs/GaAs heterostructure			Type	Journal Article
Year	2005	Publication	Semicond.	Abbreviated Journal	Semicond.
Volume	39	Issue	9	Pages	1082-1086
Keywords	2D electron gas, AlGaAs/GaAs heterostructures, mixers
Abstract	Experimental results obtained by studying the main characteristics of a millimeter-submillimeter wave mixer based on the hot-electron effect in a two-dimensional electron gas in a AlGaAs/GaAs heterostructure with a phonon-scattering cooling mechanism for charge carriers are reported. The gain bandwidth of the mixer is 4 GHz, the internal conversion losses are 13 dB, and the optimum local-oscillator power is 0.5 μW (for a mixer area of 1 μm2). It is shown that a millimeter-submillimeter-wave receiver with a noise temperature of 1900 K can be developed on the basis of a AlGaAs/GaAs mixer. This mixer also appears to be promising for use in array receiver elements.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7826	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1463
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Author	Smirnov, K.; Korneev, A.; Minaeva, O.; Divochiy, A.; Tarkhov, M.; Ryabchun, S.; Seleznev, V.; Kaurova, N.; Voronov, B.; Gol'tsman, G.; Polonsky, S.
Title	Ultrathin NbN film superconducting single-photon detector array			Type	Conference Article
Year	2007	Publication	J. Phys.: Conf. Ser.	Abbreviated Journal	J. Phys.: Conf. Ser.
Volume	61	Issue		Pages	1081-1085
Keywords	SSPD array
Abstract	We report on the fabrication process of the 2 × 2 superconducting single-photon detector (SSPD) array. The SSPD array is made from ultrathin NbN film and is operated at liquid helium temperatures. Each detector is a nanowire-based structure patterned by electron beam lithography process. The advances in fabrication technology allowed us to produce highly uniform strips and preserve superconducting properties of the unpatterned film. SSPD exhibit up to 30% quantum efficiency in near infrared and up to 1% at 5-μm wavelength. Due to 120 MHz counting rate and 18 ps jitter, the time-domain multiplexing read-out is proposed for large scale SSPD arrays. Single-pixel SSPD has already found a practical application in non-invasive testing of semiconductor very-large scale integrated circuits. The SSPD significantly outperformed traditional single-photon counting avalanche diodes.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1742-6588	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	408
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Author	Ozhegov, R. V.; Gorshkov, K. N.; Okunev, O. V.; Gol’tsman, G. N.
Title	Superconducting hot-electron bolometer mixer as element of thermal imager matrix			Type	Journal Article
Year	2010	Publication	Tech. Phys. Lett.	Abbreviated Journal	Tech. Phys. Lett.
Volume	36	Issue	11	Pages	1006-1008
Keywords	HEB mixers
Abstract	The possibility of using a matrix of sensitive elements on a 12-mm-diameter hyperhemispherical lens in a thermal imager operating in the terahertz range has been studied. Dimensions of a lens region acceptable for arrangement of the matrix, in which the receiver noise temperature varies within 16% of the mean value, are determined to be 3.3% of the lens diameter. Deviations of the main lobe of the directivity pattern are evaluated, which amount to ±1.25° relative to the direction toward the optimum position of a mixer. The fluctuation sensitivity of the receiver measured in experiment is 0.5 K at a frequency of 300 GHz.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7850	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1390
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Author	Goltsman, G. N.; Samartsev, V. V.; Vinogradov, E. A.; Naumov, A. V.; Karimullin, K. R.
Title	New generation of superconducting nanowire single-photon detectors			Type	Conference Article
Year	2015	Publication	EPJ Web of Conferences	Abbreviated Journal	EPJ Web of Conferences
Volume	103	Issue		Pages	01006 (1 to 2)
Keywords	SSPD, SNSPD
Abstract	We present an overview of recent results for new generation of infrared and optical superconducting nanowire single-photon detectors (SNSPDs) that has already demonstrated a performance that makes them devices-of-choice for many applications. SNSPDs provide high efficiency for detecting individual photons while keeping dark counts and timing jitter minimal. Besides superior detection performance over a broad optical bandwidth, SNSPDs are also compatible with an integrated optical platform as a crucial requirement for applications in emerging quantum photonic technologies. By embedding SNSPDs in nanophotonic circuits we realize waveguide integrated single photon detectors which unite all desirable detector properties in a single device.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1349
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Author	Lobanov, Y. V.; Shcherbatenko, M. L.; Semenov, A. V.; Kovalyuk, V. V.; Korneev, A. A.; Goltsman, G. N.; Vinogradov, E. A.; Naumov, A. V.; Gladush, M. G.; Karimullin, K. R.
Title	Heterodyne spectroscopy with superconducting single-photon detector			Type	Conference Article
Year	2017	Publication	EPJ Web Conf.	Abbreviated Journal	EPJ Web Conf.
Volume	132	Issue		Pages	01005
Keywords	SSPD mixer, SNSPD
Abstract	We demonstrate successful operation of a Superconducting Single Photon Detector (SSPD) as the core element in a heterodyne receiver. Irradiating the SSPD by both a local oscillator power and signal power simultaneously, we observed beat signal at the intermediate frequency of a few MHz. Gain bandwidth was found to coincide with the detector single pulse width, where the latter depends on the detector kinetic inductance, determined by the superconducting nanowire length.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1205
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Author	Elezov, M. S.; Ozhegov, R. V.; Goltsman, G. N.; Makarov, V.; Vinogradov, E. A.; Naumov, A. V.; Gladush, M. G.; Karimullin, K. R.
Title	Development of the experimental setup for investigation of latching of superconducting single-photon detector caused by blinding attack on the quantum key distribution system			Type	Conference Article
Year	2017	Publication	EPJ Web Conf.	Abbreviated Journal	EPJ Web Conf.
Volume	132	Issue		Pages	01004 (1 to 2)
Keywords	QKD, SSPD, SNSPD
Abstract	Recently bright-light control of the SSPD has been demonstrated. This attack employed a “backdoor” in the detector biasing scheme. Under bright-light illumination, SSPD becomes resistive and remains “latched” in the resistive state even when the light is switched off. While the SSPD is latched, Eve can simulate SSPD single-photon response by sending strong light pulses, thus deceiving Bob. We developed the experimental setup for investigation of a dependence on latching threshold of SSPD on optical pulse length and peak power. By knowing latching threshold it is possible to understand essential requirements for development countermeasures against blinding attack on quantum key distribution system with SSPDs.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2100-014X	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1327
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Author	Tretyakov, I. V.; Anfertyev, V. A.; Revin, L. S.; Kaurova, N. S.; Voronov, B. M.; Vaks, V. L.; Goltsman, G. N.
Title	Sensitivity and resolution of a heterodyne receiver based on the NbN HEB mixer with a quantum-cascade laser as a local oscillator			Type	Journal Article
Year	2018	Publication	Radiophys. Quant. Electron.	Abbreviated Journal	Radiophys. Quant. Electron.
Volume	60	Issue	12	Pages	988-992
Keywords	NbN HEB mixer
Abstract	We present the results of experimental studies of the basic characteristics and operation features of a terahertz heterodyne detector based on the superconducting NbN HEB mixer and a quantum cascade laser as a local oscillator operating at a frequency of 2.02 THz. The measured noise temperature of such a mixer amounted to 1500 K. The spectral resolution of the detector is determined by the width of the local-oscillator spectral line whose measured value does not exceed 1 MHz. The quantum-cascade laser could be linearly tuned with respect to frequency with the coefficient 7.2 MHz/mA within the limits of the current oscillation bandwidth.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0033-8443	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1307
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Author	Cherednichenko, S.; Yagoubov, P.; Il'in, K.; Gol'tsman, G.; Gershenzon, E.
Title	Large bandwidth of NbN phonon-cooled hot-electron bolometer mixers			Type	Conference Article
Year	1997	Publication	Proc. 27th Eur. Microwave Conf.	Abbreviated Journal
Volume	2	Issue		Pages	972-977
Keywords	HEB mixer, fabrication process
Abstract	The bandwidth of NbN phonon-cooled hot electron bolometer mixers has been systematically investigated with respect to the film thickness and film quality variation. The films, 2.5 to 10 nm thick, were fabricated on sapphire substrates using DC reactive magnetron sputtering. All devices consisted of several parallel strips, each 1 um wide and 2 um long, placed between Ti-Au contact pads. To measure the gain bandwidth we used two identical BWOs operating in the 120-140 GHz frequency range, one functioning as a local oscillator and the other as a signal source. The majority of the measurements were made at an ambient temperature of 4.2 K with optimal LO and DC bias. The maximum 3 dB bandwidth (about 4 GHz) was achieved for the devices made of films which were 2.5-3.5 nm thick, had a high critical temperature, and high critical current density. A theoretical analysis of bandwidth for these mixers based on the two-temperature model gives a good description of the experimental results if one assumes that the electron temperature is equal to the critical temperature.
Address	Jerusalem, Israel
Corporate Author				Thesis
Publisher	IEEE	Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference	27th Eur. Microwave Conf.
Notes				Approved	no
Call Number				Serial	1075
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Author	Pentin, I. V.; Smirnov, A. V.; Ryabchun, S. A.; Ozhegov, R. V.; Gol’tsman, G. N.; Vaks, V. L.; Pripolzin, S. I.; Pavel’ev, D. G.; Koshurinov, Y. I.; Ivanov, A. S.
Title	Semiconducting superlattice as a solid-state terahertz local oscillator for NbN hot-electron bolometer mixers			Type	Journal Article
Year	2012	Publication	Tech. Phys.	Abbreviated Journal	Tech. Phys.
Volume	57	Issue	7	Pages	971-974
Keywords	semiconducting superlattice frequency multiplier, NbN HEB mixers
Abstract	We present the results of our studies of the semiconducting superlattice (SSL) frequency multiplier and its application as part of the solid state local oscillator (LO) in the terahertz heterodyne receiver based on a NbN hot-electron bolometer (HEB) mixer. We show that the SSL output power level increases as the ambient temperature is lowered to 4.2 K, the standard HEB operation temperature.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7842	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1378
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Author	Polyakova, O. N.; Tikhonov, V. V.; Dzardanov, A. L.; Boyarskii, D. A.; Gol’tsman, G. N.
Title	Dielectric characteristics of ore minerals in a 10–40 GHz frequency range			Type	Journal Article
Year	2008	Publication	Tech. Phys. Lett.	Abbreviated Journal	Tech. Phys. Lett.
Volume	34	Issue	11	Pages	967-970
Keywords	ore minerals, complex permittivity, sphalerite, magnetite, labradorite
Abstract	A new approach to investigation of the complex dielectric permittivity of both nonmetallic and ore minerals in the microwave frequency range is proposed. Using this approach, data on the complex permittivity of sphalerite, magnetite, and labradorite in a 10–40 GHz frequency range have been obtained for the first time. A method is proposed for calculating the complex permittivity from experimentally measured frequency dependences of the reflection and transmission coefficients of a plane-parallel plate of a given mineral. Approximate expressions that can be used for calculations of the complex refractive index and permittivity of minerals are presented.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1063-7850	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1406
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Author	Tikhonov, V. V.; Polyakova, O. N.; Gol’tsman, G. N.; Dzardanov, A. L.; Boyarskiy, D. A.
Title	Determination of dielectric properties of ore minerals in the microwave band			Type	Journal Article
Year	2008	Publication	Radiophys. Quant. Electron.	Abbreviated Journal	Radiophys. Quant. Electron.
Volume	51	Issue	12	Pages	966-974
Keywords	ore complex permittivity, chalcopyrite, magnetite, sphalerite, labradorite
Abstract	We consider a method for determining the complex dielectric permittivity of ore and nonmetal minerals in the microwave band of electromagnetic radiation. The results of measuring the reflectivity and transmittivity of chalcopyrite, magnetite, sphalerite, and labradorite samples in the frequency range 77–300 GHz are presented. A method for calculation of the complex dielectric permittivity of minerals on the basis of the obtained experimental data is proposed. The approximation formulas for calculation of the complex dielectric permittivity of the studied minerals are given.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0033-8443	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1404
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Author	Финкель, М. И.; Масленников, С. Н.; Гольцман, Г. Н.
Title	Супергетеродинные терагерцовые приёмники со сверхпроводниковым смесителем на электронном разогреве			Type	Journal Article
Year	2005	Publication	Известия высших учебных заведений. Радиофизика	Abbreviated Journal
Volume	48	Issue	10	Pages	964-970
Keywords
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes	Duplicated as 381			Approved	no
Call Number				Serial	380
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Author	Kroug, M.; Cherednichenko, S.; Merkel, H.; Kollberg, E.; Voronov, B.; Gol'tsman, G.; Hübers, H. W.; Richter, H.
Title	NbN hot electron bolometric mixers for terahertz receivers			Type	Journal Article
Year	2001	Publication	IEEE Trans. Appl. Supercond.	Abbreviated Journal	IEEE Trans. Appl. Supercond.
Volume	11	Issue	1	Pages	962-965
Keywords	NbN HEB mixers
Abstract	Sensitivity and gain bandwidth measurements of phonon-cooled NbN superconducting hot-electron bolometer mixers are presented. The best receiver noise temperatures are: 700 K at 1.6 THz and 1100 K at 2.5 THz. Parylene as an antireflection coating on silicon has been investigated and used in the optics of the receiver. The dependence of the mixer gain bandwidth (GBW) on the bias voltage has been measured. Starting from low bias voltages, close to operating conditions yielding the lowest noise temperature, the GBW increases towards higher bias voltages, up to three times the initial value. The highest measured GBW is 9 GHz within the same bias range the noise temperature increases by a factor of two.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	312
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Author	Ptitsina, N. G.; Chulkova, G. M.; Gershenzon, E. M.
Title	Influence of the interference of electron-phonon and electron-impurity scattering on the conductivity of unordered Nb films			Type	Journal Article
Year	1995	Publication	JETP	Abbreviated Journal	JETP
Volume	80	Issue	5	Pages	960-964
Keywords
Abstract	The temperature dependence of the resistivity of Nb thin films has been studied at T=4.2-300 K. It has been shown that quantum interference between electron-phonon and electron-impurity scattering determines the temperature dependence of the resistivity of the films investigated over a broad temperature range. The magnitude of the contribution of the electron-phonon-impurity,interference is described satisfactorily by the theory developed by Reizer and Sergeev {Zh. Eksp. Teor. Fiz. 92,2291 (1987) [Sov. Phys. JETP 65, 1291 (1987)l). The interaction constants of electrons with longitudinal and transverse phonons in Nb films have been determined for the first time by comparing the experimental data with the theory. The values of the constants obtained are consistent with the data on the inelastic electron-phonon scattering times in the films investigated. The contribution of the transverse phonons is dominant both in the interference correction to the resistivity and in the electron energy relaxation.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number	RPLAB @ phisix @			Serial	989
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Author	Jukna, A.; Kitaygorsky, J.; Pan, D.; Cross, A.; Perlman, A.; Komissarov, I.; Sobolewski, R.; Okunev, O.; Smirnov, K.; Korneev, A.; Chulkova, G.; Milostnaya, I.; Voronov, B.; Gol'tsman, G.
Title	Dynamics of hotspot formation in nanostructured superconducting stripes excited with single photons			Type	Journal Article
Year	2008	Publication	Acta Physica Polonica A	Abbreviated Journal	Acta Physica Polonica A
Volume	113	Issue	3	Pages	955-958
Keywords	SSPD, SNSPD
Abstract	Dynamics of a resistive hotspot formation by near-infrared-wavelength single photons in nanowire-type superconducting NbN stripes was investigated. Numerical simulations of ultrafast thermalization of photon-excited nonequilibrium quasiparticles, their multiplication and out-diffusion from a site of the photon absorption demonstrate that 1.55 μm wavelength photons create in an ultrathin, two-dimensional superconducting film a resistive hotspot with the diameter which depends on the photon energy, and the nanowire temperature and biasing conditions. Our hotspot model indicates that under the subcritical current bias of the 2D stripe, the electric field penetrates the superconductor at the hotspot boundary, leading to suppression of the stripe superconducting properties and accelerated development of a voltage transient across the stripe.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN		ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1414
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Author	Voronov, B. M.; Gershenzon, E. M.; Gol'tsman, G. N.; Gogidze, I. G.; Gusev, Yu. P.; Zorin, M. A.; Sejdman, L. A.; Semenov, A. D.
Title	Picosecond range detector base on superconducting niobium nitride film sensitive to radiation in spectral range from millimeter waves up to visible light			Type	Journal Article
Year	1992	Publication	Sverkhprovodimost': Fizika, Khimiya, Tekhnika	Abbreviated Journal	Sverkhprovodimost': Fizika, Khimiya, Tekhnika
Volume	5	Issue	5	Pages	955-960
Keywords	NbN HEB detectors
Abstract	Fast-operating picosecond detector of electromagnetical radiation is developed on the basis of fine superconducting film of niobium nitride with high sensitivity within spectral range from millimetric waves up to visible light. Detector sensitive element represents structure covering narrow parallel strips with micron sizes included in the rupture of microstrip line. Detecting ability of the detector and time constant measured using amplitude-simulated radiation of reverse wave tubes and pulse radiation of picosecond gas and solid-body lasers, constitute D*≅1010 W-1·cm·Hz-1/2 and τ≤5 ps respectively, at 10 K temperature. The expected value of time constant of the detector at 10 K obtained via extrapolation of directly measured dependence that is, τ ∝ τ-1, constitutes 20 ps. Experimental data demonstrate that detection mechanism is linked with electron heating effect.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language	Russian	Summary Language		Original Title
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0131-5366	ISBN		Medium
Area		Expedition		Conference
Notes				Approved	no
Call Number				Serial	1670
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