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Burke, P. J.; Schoelkopf, R. J.; Prober, D. E.; Skalare, A.; Karasik, B. S.; Gaidis, M. C.; McGrath, W. R.; Bumble, B.; LeDuc, H. G. |
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Title |
Mixing and noise in diffusion and phonon cooled superconducting hot-electron bolometers |
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Journal Article |
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Year |
1999 |
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J. Appl. Phys. |
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Volume |
85 |
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3 |
Pages |
1644-1653 |
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Keywords |
HEB, mixer |
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0021-8979 |
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556 |
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Author |
Mason, Whitney; Waterman, J. R. |
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Title |
Electrical and optical characteristics of two color mid wave HgCdTe infrared detectors |
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Journal Article |
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Year |
1999 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
74 |
Issue |
11 |
Pages |
1633-1635 |
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0003-6951 |
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RPLAB @ s @ |
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461 |
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Author |
Vystavkin, A. N. |
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Title |
Estimation of noise equivalent power and design analysis of an andreev reflection hot-electron microbolometer for submillimeter radioastronomy |
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Journal Article |
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Year |
1999 |
Publication |
Rus. J. Radio Electron. |
Abbreviated Journal |
Rus. J. Radio Electron. |
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Issue |
10 |
Pages |
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Keywords |
HEB, detector, bolometer |
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Results of theoretical estimations and measurements of characteristics of an Andreev reflection hot-electron microbolometer for submillimeter radioastronomy made by different researchers are reviewed and analysed. Peculiarities and characteristics of the microbolometers using two types of microthermometer for measurement of the electron temperature increment under influence of the radiation: the SIN-junction and the transition-edge sensor (TES) with electrothermal feedback – are compared. Advantages of the microbolometer with the second type of the microthermometer when the TES is used simultaneously as the absorber of radiation are shown. Methods of achievement of the best noise equivalent power of the microbolometer in such version as well as methods of the matching the microbolometer with the incident radiation flow using planar antennas and with the channel of output signal measurement using a SQUID-picoammeter are considered. |
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496 |
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Tong, C. E.; Blundell, R.; Papa, D. C.; Smith, M.; Kawamura, J.; Gol'tsman, G.; Gershenzon, E.; Voronov, B. |
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An all solid-state superconducting heterodyne receiver at terahertz frequencies |
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Journal Article |
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Year |
1999 |
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IEEE Microw. Guid. Wave Lett. |
Abbreviated Journal |
IEEE Microw. Guid. Wave Lett. |
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Volume |
9 |
Issue |
9 |
Pages |
366-368 |
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Keywords |
waveguide NbN HEB mixers |
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Abstract |
A superconducting hot-electron bolometer mixer-receiver operating from 1 to 1.26 THz has been developed. This heterodyne receiver employs two solid-state local oscillators each consisting of a Gunn oscillator followed by two stages of varactor frequency multiplication. The measured receiver noise temperature is 1350 K at 1.035 THz and 2700 K at 1.26 THz. This receiver demonstrates that tunable solid-state local oscillators, supplying only a few micro-watts of output power, can be used in terahertz receiver applications. |
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1051-8207 |
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1565 |
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Author |
Semenov, A. D.; Gol'tsman, G. N. |
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Title |
Non-thermal response of a diffusion-cooled hot-electron bolometer |
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Journal Article |
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Year |
1999 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
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Volume |
9 |
Issue |
2 |
Pages |
4491-4494 |
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Keywords |
HEB mixers, non-thermal |
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We present an analysis of a diffusion-cooled hot-electron bolometer in the limiting case of a weak thermalization of non-equilibrium quasiparticles. We propose a new model relying on the non-thermal suppression of the superconducting energy gap by excess quasiparticles. Using material parameters typical for Al, we evaluate performance of the bolometer in the heterodyne regime at terahertz frequencies. Estimates show that the mixer may have quantum limited noise temperature and a few tens of GHz bandwidth, while the required local oscillator power is in the /spl mu/W range due to in-effective suppression of the energy gap by quasiparticles with high energies. |
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1051-8223 |
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1567 |
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