NbN phonon-cooled hot-electron bolometer as a mixer for THz heterodyne receivers

Heinz-Wilhelm Huebers; Josef Schubert; A. Semenov; Gregory N. Gol'tsman; Boris M. Voronov; Eugeni M. Gershenzon; Gerhard W. Schwaab

doi:10.1117/12.361065

9 September 1999 NbN phonon-cooled hot-electron bolometer as a mixer for THz heterodyne receivers

Heinz-Wilhelm Huebers, Josef Schubert, A. Semenov, Gregory N. Gol'tsman, Boris M. Voronov, Eugeni M. Gershenzon, Gerhard W. Schwaab

Author Affiliations +

Proceedings Volume 3828, Terahertz Spectroscopy and Applications II; (1999) https://doi.org/10.1117/12.361065
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

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.

Citation Download Citation

Heinz-Wilhelm Huebers, Josef Schubert, A. Semenov, Gregory N. Gol'tsman, Boris M. Voronov, Eugeni M. Gershenzon, and Gerhard W. Schwaab "NbN phonon-cooled hot-electron bolometer as a mixer for THz heterodyne receivers", Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); https://doi.org/10.1117/12.361065

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