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Proceedings Paper

Direct detection behavior of a superconducting hot electron bolometer measured by Fourier transform spectrometer
Author(s): W. Miao; W. Zhang; K. M, Zhou; Z, H. Lin; Q. J. Yao; Y. Delorme; R. Lefevre; S. C. Shi
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Paper Abstract

In this paper, the direct detection behaviors of a superconducting hot electron bolometer integrated with a log spiral antenna are investigated by using Fourier Transform Spectrometer (FTS). We find the response of the bolometer to a modulated signal can be detected by a lock-in amplifier not only from the DC bias current, but also from the output noise power at the IF port of the HEB. We attribute the response in output noise power to Johnson noise and thermal fluctuation noise. Both the current response and the output noise power response measured at different bias voltages can be explained by one dimensional distributed hot spot model. In addition, the frequency response of the hot electron bolometer measured from the response in DC bias current is in good agreement with that in IF output noise power.

Paper Details

Date Published: 4 November 2010
PDF: 6 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78540B (4 November 2010); doi: 10.1117/12.871759
Show Author Affiliations
W. Miao, Purple Mountain Observatory (China)
W. Zhang, Purple Mountain Observatory (China)
K. M, Zhou, Purple Mountain Observatory (China)
Z, H. Lin, Purple Mountain Observatory (China)
Q. J. Yao, Purple Mountain Observatory (China)
Y. Delorme, Observatoire de Paris (France)
R. Lefevre, Observatoire de Paris (France)
S. C. Shi, Purple Mountain Observatory (China)

Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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