| Records |
| Author |
Schubert, J.; Semenov, A.; Hübers, H.-W.; Gol'tsman, G.; Schwaab, G.; Voronov, B.; Gershenzon, E. |
| Title |
Broad-band terahertz NbN hot-electron bolometric mixer |
Type |
Conference Article |
| Year |
1999 |
Publication |
Inst. Phys. Conf. |
Abbreviated Journal |
Inst. Phys. Conf. |
| Volume |
167 |
Issue |
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Pages |
663-666 |
| Keywords |
NbN HEB mixers |
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4th Europ. Conf. on Appl. Superconductivity, Barcelona, Spain, 14-17 September 1999 |
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no |
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1578 |
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| Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Elantiev, A. I.; Karasik, B. S.; Potoskuev, S. E. |
| Title |
Intense electromagnetic radiation heating of electrons of a superconductor in the resistive state |
Type |
Journal Article |
| Year |
1988 |
Publication |
Sov. J. Low Temp. Phys. |
Abbreviated Journal |
Sov. J. Low Temp. Phys. |
| Volume |
14 |
Issue |
7 |
Pages |
414-420 |
| Keywords |
HEB |
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| Notes |
Duplicated as 1697 |
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no |
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Serial |
236 |
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| Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Elant'ev, A. I.; Karasik, B. S.; Potoskuev, S. E. |
| Title |
Intense electromagnetic radiation heating of superconductor electrons in resistive state |
Type |
Journal Article |
| Year |
1988 |
Publication |
Fizika Nizkikh Temperatur |
Abbreviated Journal |
Fizika Nizkikh Temperatur |
| Volume |
14 |
Issue |
7 |
Pages |
753-763 |
| Keywords |
Nb HEB |
| Abstract |
An experimental study is made of the effect of intense radiation in the millimeter and submillimeter ranges on thin and narrow Nb films in the resistive state. It is found that the excess resistance resulting from radiation and the dependence of its relaxation time on radiation intensity and transport current can be explained in terms of the effect of electron heating. Quantitative agreement is obtained between the experimental data and a homogeneous electron heating model. |
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no |
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Serial |
1697 |
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| Author |
Kawamura, J. H.; Tong, C.-Y.E.; Blundell, R.; Cosmo Papa, D.; Hunter, T. R.; Gol'tsman, G.; Cherednichenko, S.; Voronov, B.; Gershenzon, E. |
| Title |
An 800 GHz NbN phonon-cooled hot-electron bolometer mixer receiver |
Type |
Journal Article |
| Year |
1999 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
9 |
Issue |
2 |
Pages |
3753-3756 |
| Keywords |
NbN HEB mixers |
| Abstract |
We describe a heterodyne receiver developed for astronomical applications to operate in the 350 /spl mu/m atmospheric window. The waveguide receiver employs a superconductive NbN phonon-cooled hot-electron bolometer mixer. The double sideband receiver noise temperature closely follows 1 kGHz/sup -1/ across 780-870 GHz, with the intermediate frequency centered at 1.4 GHz. The conversion loss is about 15 dB. The receiver was installed for operation at the University of Arizona/Max Planck Institute for Radio Astronomy Submillimeter Telescope facility. The instrument was successfully used to conduct test observations of a number of celestial sources in a number of astronomically important spectral lines. |
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Edition |
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| ISSN |
1051-8223 |
ISBN |
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Medium |
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no |
| Call Number |
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Serial |
288 |
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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 3*10/sup 11/ W/sup -1/ Hz/sup 1/2/ cm and 5*10/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. |
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| ISSN |
0018-9464 |
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no |
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Serial |
239 |
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| Author |
Schwaab, G.W.; Sirmain, G.; Schubert, J.; Hubers, H.-W.; Gol'tsman, G.; Cherednichenko, S.; Verevkin, A.; Voronov, B.; Gershenzon, E. |
| Title |
Investigation of NbN phonon-cooled HEB mixers at 2.5 THz |
Type |
Journal Article |
| Year |
1999 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
9 |
Issue |
2 |
Pages |
4233-4236 |
| Keywords |
NbN HEB mixers |
| Abstract |
The development of superconducting hot electron bolometric (HEB) mixers has been a big step forward in the direction of quantum noise limited mixer performance at THz frequencies. Such mixers are crucial for the upcoming generation of airborne and spaceborne THz heterodyne receivers. In this paper we report on new results on a phonon-cooled NbN HEB mixer using e-beam lithography. The superconducting film is 3 nm thick. The mixer is 0.2 μm long and 1.5 μm wide and it is integrated in a spiral antenna on a Si substrate. The device is quasi-optically coupled through a Si lens and a dielectric beam combiner to the radiation of an optically pumped FIR ring gas laser cavity. The performance of the mixer at different THz frequencies from 0.69 to 2.55 THz with an emphasis on 2.52 THz is demonstrated. At 2.52 THz minimum DSB noise temperatures of 4200 K have been achieved at an IF of 1.5 GHz and a bandwidth of 40 MHz with the mixer mounted in a cryostat and a 0.8 m long signal path in air. |
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| ISSN |
1051-8223 |
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Approved |
no |
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Serial |
550 |
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| Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Zorin, M. A.; Karasik, B. S.; Trifonov, V. A. |
| Title |
Nonequilibrium and bolometric response of YBaCuO films in a resistive state to infrared low intensity radiation |
Type |
Conference Article |
| Year |
1994 |
Publication |
Council on Low-temp. Phys. |
Abbreviated Journal |
Council on Low-temp. Phys. |
| Volume |
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Issue |
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Pages |
82-83 |
| Keywords |
YBCO HTS HEB |
| Abstract |
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| Address |
Dubna |
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Editor |
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| Language |
Russian |
Summary Language |
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Conference |
Joint Inst. for Nuclear Research, Dubna (Russian Federation); 296 p; 1994; p. 82-83; 30. Conference on low-temperature physics; 30. Soveshchanie po fizike nizkikh temperatur; Dubna (Russian Federation); 6-8 Sep 1994 |
| Notes |
Неравновесный и болометрический отклик YBaCuO пленок в резиотивном состоянии на инфракрасное лазерное излучение малой интенсивности |
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no |
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Serial |
1632 |
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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 |
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Russian |
Summary Language |
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| Notes |
Воздействие сильного магнитного поля на спектр доноров в InSb |
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no |
| Call Number |
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Serial |
1729 |
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| Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D. |
| Title |
Submillimeter backward wave tube spectrometer for measuring superconducting film transmission |
Type |
Journal Article |
| Year |
1983 |
Publication |
Pribory i Tekhnika Eksperimenta |
Abbreviated Journal |
Pribory i Tekhnika Eksperimenta |
| Volume |
26 |
Issue |
5 |
Pages |
134-137 |
| Keywords |
BWO spectroscopy, spectrometer, transmission |
| Abstract |
A spectrometer employing six backward wave tubes is described. It is intended for investigation of superconductors in the 0.2-3 mm range of wave lengths. During the measurement of the transmission spectrum it is possible to determine the energy gap for superconduct1ng films 50 to 4000 A thick. The transmission factor can vary from 10-1 to 10-9. Spectrum of relation of film transmission factors in superconducting and normal states is measured for determining the energy gap 2 Δ. The transmission spectrum obtained by means of a computer for vanadium film 300 A thick is given as an example. The energy gap 2 Δ = 1.4 MeV |
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Russian |
Summary Language |
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0032-8162 |
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| Notes |
Субмиллиметровый спектрометр с лампами обратной волны для измерения пропускания сверхпроводниковых пленок |
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no |
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Serial |
1713 |
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| Author |
Varyukhin, S. V.; Zakharov, A. A.; Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G.; Chulkova, G. M. |
| Title |
Low energy excitation in La2CuO4 |
Type |
Journal Article |
| Year |
1990 |
Publication |
Sverkhprovodimost': Fizika, Khimiya, Tekhnika |
Abbreviated Journal |
Sverkhprovodimost': Fizika, Khimiya, Tekhnika |
| Volume |
3 |
Issue |
5 |
Pages |
832-837 |
| Keywords |
metal-dielectric-La2CuO4, monocrystals |
| Abstract |
Measurements of transmission and photoconductivity spectra in submillimeter wave length range as well as of capacity C and conductivity G in the region of acoustic frequencies of metal-dielectric-La2CuO4 system at low temperatures are performed using La2CuO4 monocrystals. Optical spectra posses a threshold character, a sharp decrease of transmission and photocoductivity signal occurs in the energy region hν>1.5 MeV. C(ω,T) and G(ω, T) dependences have a universal form typical of Debye type relaxation processes. Relaxation time dependence is of thermoactivated character τ(T)∼exp(ξ/T) with the gap value ξ≅2 meV. It is assumed that excitations with characteristic energy of ∼2 meV exist in La2CuO4. A possible nature of the detected low-energy excitations is discussed. |
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Approved |
no |
| Call Number |
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Serial |
1688 |
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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 |
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Approved |
no |
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Serial |
240 |
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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. |
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| Language |
Russian |
Summary Language |
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Edition |
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| ISSN |
0235-8964 |
ISBN |
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Approved |
no |
| Call Number |
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Serial |
1669 |
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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. |
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Series Issue |
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Edition |
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| ISSN |
0131-5366 |
ISBN |
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Expedition |
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| Notes |
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Approved |
no |
| Call Number |
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Serial |
1674 |
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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 |
Summary Language |
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Edition |
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0131-5366 |
ISBN |
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Approved |
no |
| Call Number |
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Serial |
1670 |
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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. |
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Russian |
Summary Language |
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Edition |
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0131-5366 |
ISBN |
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Approved |
no |
| Call Number |
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Serial |
1673 |
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