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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 (down) 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
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Call Number Serial 240
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Author Gershenzon, E. M.; Gol’tsman, G. N.; Semenov, A. D.; Sergeev, A. V.
Title (down) 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.
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ISSN 1941-0069 ISBN Medium
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Notes Approved no
Call Number Serial 1679
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V.
Title (down) Mechanism of picosecond response of granular YBaCuO films to electromagnetic radiation Type Journal Article
Year 1990 Publication Solid State Communications Abbreviated Journal Solid State Communications
Volume 76 Issue 4 Pages 493-497
Keywords YBCO HTS detectors
Abstract The ultrafast mechanisms of radiation detection in granular YBaCuO films are studied in the wide wavelength range from millimeter to near infrared. With the rise of 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. Electron-phonon relaxation time τeph is determined by direct measurements and analyses quasistationary electron heating. Temperature dependence of τeph at T ≤ 40 K was found to be τeph ∼ T−1. The results show that detectors with the response time of few picoseconds at nitrogen temperature are attainable.
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ISSN 0038-1098 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Serial 1685
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D.
Title (down) Measurement of the energy gap in the compound YBaCu3O9-δ on the basis of the IR absorption spectrum Type Journal Article
Year 1987 Publication JETP Lett. Abbreviated Journal JETP Lett.
Volume 46 Issue 5 Pages 237-238
Keywords YBCO HTS detectors
Abstract For the first time the long-wave infrared absorption spectrum has been measured by means of the bolometric effect and energy gap for high-temperature superconducting ceramics YBa/sub 2/Cu/sub 3/O/sub 9-delta/ has been determined from absorption threshold. 2delta/kT/sub c/ value is equal to 0.6.
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Call Number Serial 1703
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Author Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Lyulkin, A. M.; Semenov, A. D.; Sergeev, A. V.
Title (down) Limiting characteristics of fast-response superconducting bolometers Type Journal Article
Year 1989 Publication Zhurnal Tekhnicheskoi Fiziki Abbreviated Journal Zhurnal Tekhnicheskoi Fiziki
Volume 59 Issue 2 Pages 11-120
Keywords HEB
Abstract Теоретически и экспериментально исследовано физическое ограничение быстродействия сверхпроводящего болометра. Показано, что минимальная постоянная времени реализуется в условиях электронного разогрева и определяется процессом неупругого электрон-фонон-ного взаимодействия. Сформулированы требования к конструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электрон­ного болометра и обычных болометров различных типов.
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Notes Approved no
Call Number Serial 1696
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