Normal state YBa2Cu3Ox films: A new fast thermal detector for far infrared laser radiation with a uniform wavelength response

URN to cite this document:: urn:nbn:de:bvb:355-epub-169514
DOI to cite this document:: 10.5283/epub.16951

Huggard, P. G. ; Zeuner, S. ; Goller, K. ; Lengfellner, Hans ; Prettl, Wilhelm

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Date of publication of this fulltext: 04 Oct 2010 12:31

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Abstract

Room temperature YBa2Cu3Ox films, epitaxially grown on oriented substrates, are shown to be effective detectors of far infrared laser pulses. The photovoltage arises due to an anisotropic material thermopower subject to the thermal gradient arising from the radiation heating. For a 40 nm thick film we have measured a responsivity of (5±2)×10−7 V/W, independent of frequency in the range from 20 to ...