TY  - JOUR
AU  - Kawamura, J.
AU  - Tong, C-Y E.
AU  - Blundell, R.
AU  - Papa, D. C.
AU  - Hunter, T. R.
AU  - Patt, F.
AU  - Gol’tsman, G.
AU  - Gershenzon, E.
PY  - 2001
DA  - 2001//
TI  - Terahertz-frequency waveguide NbN hot-electron bolometer mixer
T2  - IEEE Trans. Appl. Supercond.
JO  - IEEE Trans. Appl. Supercond.
SP  - 952
EP  - 954
VL  - 11
IS  - 1
KW  - NbN HEB mixers
AB  - We have developed a low-noise waveguide heterodyne receiver for operation near 1 THz using phonon-cooled NbN hot-electron bolometers. The mixer elements are submicron-sized microbridges of 4 nm-thick NbN film fabricated on a quartz substrate. Operating at a bath temperature of 4.2 K, the double-sideband receiver noise temperature is 760 K at 1.02 THz and 1100 K at 1.26 THz. The local oscillator is provided by solid-state sources, and power measured at the source is less than 1 /spl mu/W. The intermediate frequency bandwidth exceeds 2 GHz. The receiver was used to make the first ground-based heterodyne detection of a celestial spectroscopic line above 1 THz.
SN  - 1558-2515
UR  - https://doi.org/10.1109/77.919505
DO  - 10.1109/77.919505
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1546), last updated on Mon, 24 May 2021 14:01:46 -0500
ID  - Kawamura_etal2001
ER  -