Infrared detection is one of the major potential applications of high temperature superconducting (HTS) materials.1 Here we report a study of HTS thin film detectors at the CO2 laser wavelength of 10.6 µm. Both the speed and detectivity were measured and compared to conventional detectors at this wavelength. It is shown that HTS detectors are comparable to commercial high speed gold doped germanium (Ge:Au) detectors.

© 1990 Optical Society of America

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