Microwave detection with high < e1 > T < /e1 > (c) superconducting thin films

Measurements were made of the microwave responses of YBaCuO superconducting thin films. The sample was a chemically etched line approximately 200 mum long and 20 mum wide. The measurements were performed in three different frequency ranges: 1-40 GHz, 90-100 GHz, and HeNe laser. Different kinds of re...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1991-03, Vol.27 (2), p.2507-2511
Main Authors: Zaquine, I, Mage, J C, Marcilhac, B, Dieumegard, D
Format: Article
Language:English
Online Access:Get full text
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Summary:Measurements were made of the microwave responses of YBaCuO superconducting thin films. The sample was a chemically etched line approximately 200 mum long and 20 mum wide. The measurements were performed in three different frequency ranges: 1-40 GHz, 90-100 GHz, and HeNe laser. Different kinds of responses were observed: a bolometric peak that can be easily related to < e1 > dR < /e1 > / < e1 > dt < /e1 > and a nonbolometric peak. The power dependence of the response was plotted for different bias currents. The response time was shorter than 1 mus in most cases. The sensitivity was not comparable to that of semiconductor detectors, but it is shown how the design of this detector could be optimized to improve its sensitivity. The operating frequency range is superior to that of other detectors. A review of the different models regarding the response of superconducting thin films to photon irradiation is presented, and the experimental results are interpreted
ISSN:0018-9464
DOI:10.1109/20.133728