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Semenov, Alexei D; Gol'tsman, Gregory N; Sobolewski, Roman |
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Hot-electron effect in superconductors and its applications for radiation sensors |
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2002 |
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Superconductor Science and Technology |
Abbreviated Journal |
Supercond. Sci. Technol. |
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15 |
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4 |
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R1-R16 |
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HEB, SSPD |
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The paper reviews the main aspects of nonequilibrium hot-electron phenomena in superconductors and various theoretical models developed to describe the hot-electron effect. We discuss implementation of the hot-electron avalanche mechanism in superconducting radiation sensors and present the most successful practical devices, such as terahertz mixers and direct intensity detectors, for far-infrared radiation. Our presentation also includes the novel approach to hot-electron quantum detection implemented in superconducting x-ray to optical photon counters. |
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0953-2048 |
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416 |
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Cherednichenko, Sergey; Drakinskiy, Vladimir; Berg, Therese; Khosropanah, Pourya; Kollberg, Erik |
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Title |
Hot-electron bolometer terahertz mixers for the Herschel Space Observatory |
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Journal Article |
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2008 |
Publication |
Review of Scientific Instruments |
Abbreviated Journal |
Rev. Sci. Instrum. |
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79 |
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034501 |
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HEB mixer, HEB detector, HEB direct detector, applications |
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We report on low noise terahertz mixers(1.4–1.9THz) developed for the heterodyne spectrometer onboard the Herschel Space Observatory. The mixers employ double slot antenna integrated superconducting hot-electron bolometers (HEBs) made of thin NbN films. The mixer performance was characterized in terms of detection sensitivity across the entire rf band by using a Fourier transform spectrometer (from 0.5to2.5THz, with 30GHz resolution) and also by measuring the mixernoise temperature at a limited number of discrete frequencies. The lowest mixernoise temperature recorded was 750K [double sideband (DSB)] at 1.6THz and 950KDSB at 1.9THz local oscillator (LO) frequencies. Averaged across the intermediate frequency band of 2.4–4.8GHz, the mixernoise temperature was 1100KDSB at 1.6THz and 1450KDSB at 1.9THz LO frequencies. The HEB heterodyne receiver stability has been analyzed and compared to the HEB stability in the direct detection mode. The optimal local oscillator power was determined and found to be in a 200–500nW range. |
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908 |
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Tretyakov, I. V.; Finkel, M. I.; Ryabchun, S. A.; Kardakova, A. I.; Seliverstov, S. V.; Petrenko, D. V.; Goltsman, G. N. |
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Title |
Hot-electron bolometer mixers with in situ contacts |
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Journal Article |
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2014 |
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Radiophys. Quant. Electron. |
Abbreviated Journal |
Radiophys. Quant. Electron. |
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56 |
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8-9 |
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591-598 |
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HEB mixers |
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We report on the latest achievements in the development of superconducting hot-electron bolometer (HEB) mixers for terahertz superheterodyne receivers. We consider application ranges of such receivers and requirements for the basic characteristics of the mixers. Main features of the mixers, such as noise temperature, gain bandwidth, noise bandwidth, and required local-oscillator power, have been improved significantly over the past few years due to intense research work, both in terms of the element fabrication quality and in terms of understanding of the physics of the processes occurring in the HEB mixers. Contacts between the superconducting bridge and the planar antenna play a key role in the mixer operation. Improvement of the quality of the contacts leads simultaneously to a decrease in the noise temperature and an increase in the gain bandwidth of a mixer. |
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0033-8443 |
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1170 |
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Yagoubov, P.; Hübers, H.-W.; Gol’tsman, G.; Semenov, A.; Gao, J.; Hoogeveen, R.; de Graauw, T.; Birk, M.; Selig, A.; de Korte, P. |
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Hot-electron bolometer mixers – technology for far-infrared heterodyne instruments in future atmospheric chemistry missions |
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2001 |
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Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space |
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Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space |
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57-69 |
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HEB mixers |
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Delmenhorst |
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Logos-Verlag |
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Buehler, S.; Berlin |
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3-89722-700-2 |
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International Symposium on Submillimeter Wave Earth Observation from Space, ISSMWEOS01 |
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1549 |
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Gershenzon, E. M.; Gol'tsman, G. N. |
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Title |
Hot electron superconductive mixers |
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Conference Article |
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Year |
1993 |
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Proc. 4th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 4th Int. Symp. Space Terahertz Technol. |
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618-622 |
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HEB mixers |
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