TY  - CONF
AU  - Schubert, J.
AU  - Semenov, A.
AU  - Gol'tsman, G.
AU  - Hübers, H-W
AU  - Schwaab, G.
AU  - Voronov, B.
AU  - Gershenzon, E.
PY  - 1999
DA  - 1999//
TI  - Noise temperature and sensitivity of a NbN hot-electron mixer at frequencies from 0.7 THz to 5.2 THz
T2  - Proc. 10[super:th] Int. Symp. Space Terahertz Technol.
BT  - Proc. 10[super:th] Int. Symp. Space Terahertz Technol.
SP  - 190
EP  - 199
KW  - NbN HEB mixers
AB  - We report on noise temperature measurements of a NbN phonon-cooled hot-electron bolometric mixer at different bias regimes. The device was a 3 nm thick bridge with in-plane dimensions of 1.7 x 0.2 gm 2 integrated in a complementary logarithmic spiral antenna. Measurements were performed at frequencies ranging from 0.7 THz up to 5.2 THz. The measured DSB noise temperatures are 1500 K (0.7 THz), 2200 K (1.4 THz), 2600 K (1.6 THz), 2900 K (2.5 THz), 4000 K (3.1 THz) 5600 K (4.3 THz) and 8800 K (5.2 THz). Two bias regimes are possible in order to achieve low noise temperatures. But only one of them yields sensitivity fluctuations close to the theoretical limit.
UR  - https://www.nrao.edu/meetings/isstt/1999.shtml
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1573), last updated on Tue, 25 May 2021 13:59:32 -0500
ID  - Schubert_etal1999
ER  -