PT Unknown
AU Tong, CE
   Kawamura, J
   Todd, RH
   Papa, DC
   Blundell, R
   Smith, M
   Patt, F
   Gol'tsman, G
   Gershenzon, E
TI Successful operation of a 1 THz NbN hot-electron bolometer receiver
SE Proc. 11[super:th] Int. Symp. Space Terahertz Technol.
PY 2000
BP 49
EP 59
DE NbN HEB mixers; applications
AB A phonon-cooled NbN superconductive hot-electron bolometer receiver covering the frequency range 0.8-1.04 THz has successfully been used for astronomical observation at the Sub-Millimeter Telescope Observatory on Mount Graham, Arizona. This waveguide heterodyne receiver is a modified version of our fixed-tuned 800 GHz HEB receiver to allow for operation beyond 1 THz. The measured noise temperature of this receiver is about 1250 K at 0.81 THz, 560 K at 0.84 THz, and 1600 K at 1.035 THz. It has a 1 GHz wide IF bandwidth, centered at 1.8 GHz. This receiver has recently been used to detect the CO (9-8) molecular line emission at 1.037 THz in the Orion nebula. This is the first time a ground-based heterodyne receiver has been used to detect a celestial source above 1 THz.
ER