Abstract
Since the discovery of high-Tc superconductors, the feasibility of optical and infrared superconducting detectors has been much investigated as one of the promising electronic applications.[1, 2] In this paper, we have investigated optical response of epitaxial DyBa2Cu3O7-x thin films to a GaAlAs diode laser light at the wavelength of 830 nm in order to use the thin film as a fast photo-detector for our laser frequency system with the accuracy as high as 1 × 10-10.[3] We have, for the first time, succeeded in observing the optical response at the modulation frequency up to 100 MHz.
© 1992 IQEC
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