"A 1-THz superconducting hot-electron-bolometer receiver for astronomical observations"

Details "A 1-THz superconducting hot-electron-bolometer receiver for astronomical observations" "A 1-THz superconducting hot-electron-bolometer receiver for astronomical observations"

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004itmtt..52.2338m&link_type=abstract

IEEE Transactions on Microwave Theory and Techniques, Vol. 52, p2338-2343

Astronomy and Astrophysics

Astrophysics

28

Scientific paper

n this paper, we describe a superconducting hot-electron-bolometer mixer receiver developed to operate in atmospheric windows between 800-1300 GHz. The receiver uses a waveguide mixer element made of 3-4-nm-thick NbN film deposited over crystalline quartz. This mixer yields double-sideband receiver noise temperatures of 1000 K at around 1.0 THz, and 1600 K at 1.26 THz, at an IF of 3.0 GHz. The receiver was successfully tested in the laboratory using a gas cell as a spectral line test source. It is now in use on the Smithsonian Astrophysical Observatory terahertz test telescope in northern Chile.

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