TY  - JOUR
AU  - Gerecht, E.
AU  - Musante, C. F.
AU  - Jian, H.
AU  - Yngvesson, K. S.
AU  - Dickinson, J.
AU  - Waldman, J.
AU  - Yagoubov, P. A.
AU  - Gol'tsman, G. N.
AU  - Voronov, B. M.
AU  - Gershenzon, E. M.
PY  - 1999
DA  - 1999//
TI  - New results for NbN phonon-cooled hot electron bolometric mixers above 1 THz
T2  - IEEE Trans. Appl. Supercond.
JO  - IEEE Trans. Appl. Supercond.
SP  - 4217
EP  - 4220
VL  - 9
IS  - 2
KW  - NbN HEB mixers
AB  - NbN Hot Electron Bolometric (HEB) mixers have produced promising results in terms of DSB receiver noise temperature (2800 K at 1.56 THz). The LO source for these mixers is a gas laser pumped by a CO/sub 2/ laser and the device is quasi-optically coupled through an extended hemispherical lens and a self-complementary log-periodic toothed antenna. NbN HEBs do not require submicron dimensions, can be operated comfortably at 4.2 K or higher, and require LO power of about 100-500 nW. IF noise bandwidths of 5 GHz or greater have been demonstrated. The DC bias point is also not affected by thermal radiation at 300 K. Receiver noise temperatures below 1 THz are typically 450-600 K and are expected to gradually approach these levels above 1 THz as well. NbN HEB mixers thus are rapidly approaching the type of performance required of a rugged practical receiver for astronomy and remote sensing in the THz region.
SN  - 1051-8223
UR  - http://ieeexplore.ieee.org/document/783955/
UR  - https://doi.org/10.1109/77.783955
DO  - 10.1109/77.783955
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1568), last updated on Tue, 25 May 2021 12:32:05 -0500
ID  - Gerecht_etal1999
ER  -