ISSTT Proceedings

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Successful Operation of a 1 THz NbN Hot-Electron Bolometer Receiver

Authors:
C.-Y. Edward Tong, Jonathan Kawamura, Todd R. Hunter, D. Cosmo Papa, Raymond Blundell, Michael Smith, Ferdinand Patt, Gregory Gol'tsman, Eugene Gershenzon
Abstract:
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 CHz wide IF bandwidth, centered at 1.8 CHz. 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.
Categories:
Hot Electron Bolometers
Year:
2000
Session:
1
Full-text:
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Page Number(s):
49-59