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Proceedings Paper

Noise temperature of a 4.3 THz HEB receiver
Author(s): Pourya Khosropanah; Wouter M. Laauwen; Jian-Rong Gao; Merlijn Hajenius; J. Niels Hovenier; Teun M. Klapwijk
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Paper Abstract

We have characterized a heterodyne receiver based on an NbN hot electron bolometer integrated with spiral antenna as mixer and an optically pumped FIR ring laser at 4.3 THz as local oscillator (LO). We succeeded in measuring the receiver output power, responding to the hot/cold load, as a function of bias voltage at optimum LO power. From the resulted receiver noise temperature versus the bias voltage, we found a DSB receiver noise temperature of 3500 K at a bath temperature of 4 K, which is a minimum average value. This is the highest sensitivity reported so far at frequencies above 4 THz.

Paper Details

Date Published: 26 September 2007
PDF: 6 pages
Proc. SPIE 6678, Infrared Spaceborne Remote Sensing and Instrumentation XV, 667803 (26 September 2007); doi: 10.1117/12.737332
Show Author Affiliations
Pourya Khosropanah, SRON Netherlands Institute for Space Research (Netherlands)
Wouter M. Laauwen, SRON Netherlands Institute for Space Research (Netherlands)
Jian-Rong Gao, SRON Netherlands Institute for Space Research (Netherlands)
Delft Univ. of Technology (Netherlands)
Merlijn Hajenius, SRON Netherlands Institute for Space Research (Netherlands)
Delft Univ. of Technology (Netherlands)
J. Niels Hovenier, Delft Univ. of Technology (Netherlands)
Teun M. Klapwijk, Delft Univ. of Technology (Netherlands)


Published in SPIE Proceedings Vol. 6678:
Infrared Spaceborne Remote Sensing and Instrumentation XV
Marija Strojnik-Scholl, Editor(s)

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