TY  - JOUR
AU  - Semenov, A. D.
AU  - Hübers, H-W
AU  - Richter, H.
AU  - Birk, M.
AU  - Krocka, M.
AU  - Mair, U.
AU  - Smirnov, K.
AU  - Gol'tsman, G. N.
AU  - Voronov, B. M.
PY  - 2002
DA  - 2002//
TI  - 2.5 THz heterodyne receiver with NbN hot-electron-bolometer mixer
T2  - Phys. C: Supercond.
JO  - Phys. C: Supercond.
SP  - 448
EP  - 453
VL  - 372-376
KW  - NbN HEB mixers
KW  - applications
AB  - We describe a 2.5 THz heterodyne receiver for applications in astronomy and atmospheric research. The receiver employs a superconducting NbN phonon-cooled hot-electron-bolometer mixer and an optically pumped far-infrared gas laser as local oscillator. 2200 K double sideband mixer noise temperature was measured at 2.5 THz across a 1 GHz intermediate frequency bandwidth centred at 1.5 GHz. The total conversion losses were 17 dB. The mixer response was linear at load temperatures smaller than 400 K. The receiver was tested in the laboratory environment by measuring the methanol line in emission. Observed pressure broadening confirms the true heterodyne detection regime of the mixer.
SN  - 0921-4534
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0921453402007207
UR  - https://doi.org/10.1016/S0921-4534(02)00720-7
DO  - 10.1016/S0921-4534(02)00720-7
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1526), last updated on Mon, 24 May 2021 14:30:03 -0500
ID  - Semenov_etal2002
ER  -