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Proceedings Paper

NbN phonon-cooled hot-electron bolometer as a mixer for THz heterodyne receivers
Author(s): Heinz-Wilhelm Huebers; Josef Schubert; A. Semenov; Gregory N. Gol'tsman; Boris M. Voronov; Eugeni M. Gershenzon; Gerhard W. Schwaab
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Paper Abstract

We have investigated a phonon-cooled NbN hot electron bolometric (HEB) mixer in the frequency range from 0.7 THz to 5.2 THz. The device was a 3.5 nm thin film with an in- plane dimension of 1.7 X 0.2 micrometers 2 integrated in a complementary logarithmic spiral antenna. The measured DSB receiver noise temperatures are 1500 K, 2200 K, 2600 K, 2900 K, 4000 K, 5600 K and 8800 K. The sensitivity fluctuation, the long term stability, and the antenna pattern were measured and the suitability of the mixer for a practical heterodyne receiver is discussed.

Paper Details

Date Published: 9 September 1999
PDF: 7 pages
Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); doi: 10.1117/12.361065
Show Author Affiliations
Heinz-Wilhelm Huebers, DLR (Germany)
Josef Schubert, DLR (Germany)
A. Semenov, State Pedagogical Univ. (Russia)
Gregory N. Gol'tsman, State Pedagogical Univ. (Russia)
Boris M. Voronov, State Pedagogical Univ. (Russia)
Eugeni M. Gershenzon, State Pedagogical Univ. (Russia)
Gerhard W. Schwaab, Ruhr Univ. Bochum (Germany)

Published in SPIE Proceedings Vol. 3828:
Terahertz Spectroscopy and Applications II
J. Martyn Chamberlain, Editor(s)

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