| Records |
| 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. |
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| ISSN |
1063-7850 |
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no |
| Call Number |
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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. |
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Russian |
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0131-5366 |
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| Notes |
Сверхпроводниковые свойства ультратонких пленок NbN на различных подложках |
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no |
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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. |
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| ISSN |
0013-5194 |
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no |
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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. |
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Edition |
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| ISSN |
1063-7826 |
ISBN |
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no |
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Serial |
1463 |
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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. |
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| ISSN |
1063-7850 |
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no |
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Serial |
1390 |
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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. |
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Edition |
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| ISSN |
0033-8443 |
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no |
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Serial |
1307 |
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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. |
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Edition |
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| ISSN |
1063-7842 |
ISBN |
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no |
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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. |
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Edition |
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| ISSN |
1063-7850 |
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no |
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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. |
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0033-8443 |
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no |
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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 |
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Journal Article |
| Year |
2005 |
Publication |
Известия высших учебных заведений. Радиофизика |
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48 |
Issue |
10 |
Pages |
964-970 |
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russian |
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| Notes |
Duplicated as 381 |
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no |
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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. |
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no |
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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 |
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| 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. |
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no |
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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. |
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no |
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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. |
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Russian |
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Edition |
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| ISSN |
0131-5366 |
ISBN |
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no |
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Serial |
1670 |
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| Author |
Kawamura, J.; Tong, C.-Y. E.; Blundell, R.; Papa, D. C.; Hunter, T. R.; Patt, F.; Gol’tsman, G.; Gershenzon, E. |
| Title |
Terahertz-frequency waveguide NbN hot-electron bolometer mixer |
Type |
Journal Article |
| Year |
2001 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
11 |
Issue |
1 |
Pages |
952-954 |
| Keywords |
NbN HEB mixers |
| Abstract |
We have developed a low-noise waveguide heterodyne receiver for operation near 1 THz using phonon-cooled NbN hot-electron bolometers. The mixer elements are submicron-sized microbridges of 4 nm-thick NbN film fabricated on a quartz substrate. Operating at a bath temperature of 4.2 K, the double-sideband receiver noise temperature is 760 K at 1.02 THz and 1100 K at 1.26 THz. The local oscillator is provided by solid-state sources, and power measured at the source is less than 1 /spl mu/W. The intermediate frequency bandwidth exceeds 2 GHz. The receiver was used to make the first ground-based heterodyne detection of a celestial spectroscopic line above 1 THz. |
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1558-2515 |
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1546 |
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