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Proceedings Paper

NbN hot electron bolometer mixer at 5.3 THz
Author(s): W. Zhang; J. R. Gao; P. Khosropanah; T. Bansal; T. M. Klapwijk; W. Miao; S. C. Shi
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Paper Abstract

We report the sensitivity of a superconducting NbN hot electron bolometer mixer integrated with a tight spiral antenna at 5.3 THz. Using a measurement setup with black body calibration sources and a beam splitter in vacuo, and an antireflection coated Si lens, we obtained a double sideband receiver noise temperature of 1150 K, which is 4.5 times hν/kB (quantum limit). Our experimental results in combination with an antenna-to-bolometer coupling simulation suggest that HEB mixer can work well at least up to 6 THz, suitable for next generation of high-resolution spectroscopic of the neutral atomic oxygen (OI) line at 4.7 THz.

Paper Details

Date Published: 15 July 2010
PDF: 8 pages
Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77411B (15 July 2010); doi: 10.1117/12.857683
Show Author Affiliations
W. Zhang, SRON Netherlands Institute for Space Research (Netherlands)
Purple Mountain Observatory (China)
J. R. Gao, SRON Netherlands Institute for Space Research (Netherlands)
Delft Univ. of Technology (Netherlands)
P. Khosropanah, SRON Netherlands Institute for Space Research (Netherlands)
T. Bansal, SRON Netherlands Institute for Space Research (Netherlands)
Delft Univ. of Technology (Netherlands)
T. M. Klapwijk, Delft Univ. of Technology (Netherlands)
W. Miao, Purple Mountain Observatory (China)
S. C. Shi, Purple Mountain Observatory (China)


Published in SPIE Proceedings Vol. 7741:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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