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Chattopadhyay, G.; Rice, F.; Miller, D.; LeDuc, H. G.; Zmuidzinas, J. |
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Title |
A 530-GHz balanced mixer |
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1999 |
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IEEE Microw. and Guided Wave Lett. |
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9 |
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11 |
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467-469 |
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RPLAB @ s @ sis_Chattopadhyay_1999 |
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301 |
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Author |
Henry, Richard C. |
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Title |
Diffuse background radiation |
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1999 |
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Astrophys. J. |
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516 |
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2 |
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L49-L52 |
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0004637X |
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434 |
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Mason, Whitney; Waterman, J. R. |
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Electrical and optical characteristics of two color mid wave HgCdTe infrared detectors |
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Journal Article |
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Year |
1999 |
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Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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74 |
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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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1999 |
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Rus. J. Radio Electron. |
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Rus. J. Radio Electron. |
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10 |
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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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Schwaab, G.W.; Sirmain, G.; Schubert, J.; Hubers, H.-W.; Gol'tsman, G.; Cherednichenko, S.; Verevkin, A.; Voronov, B.; Gershenzon, E. |
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Title |
Investigation of NbN phonon-cooled HEB mixers at 2.5 THz |
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1999 |
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IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
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9 |
Issue |
2 |
Pages |
4233-4236 |
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NbN HEB mixers |
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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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1051-8223 |
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550 |
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