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Light detection using high- T sub c microstrip transmission lines as a probe of film homogeneity

Journal Article · · Journal of Applied Physics; (United States)
DOI:https://doi.org/10.1063/1.349002· OSTI ID:5161598
We have studied the effects of light on high-temperature superconductor microstrip transmission lines under conditions for which a bolometric photoresponse is expected. We illustrate the pitfall of comparing a spatially local property (such as microwave detected photoresponse) and a global property (such as microwave transmission), and then drawing conclusions regarding the bolometric character of the photoresponse. For low microwave powers, the photoresponse, measured as function of the position of the spot illuminated, provides a measurement of the spatial inhomogeneity of the microwave properties of the film. For microwave powers large enough to depress the critical temperature, such measurements provide information about standing waves in the microstrip.
OSTI ID:
5161598
Journal Information:
Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 70:9; ISSN 0021-8979; ISSN JAPIA
Country of Publication:
United States
Language:
English