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1 October 1990 Y-Ba-Cu-O thin films as high-speed IR detectors
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Y-Ba-Cu-O thin film infrared detectors were fabricated and studied with various lasers. Operation of the detector in both the bolometric and nonbolometric modes was investigated at 10 microns with a CO2 laser. In the bolometric mode, the detectivity of the detector at 90 K was 2.1 x 10 to the 8th cm sq rt Hz/W with a response time of 15 microsec, corresponding to a bandwidth of 70 KHz. The speed of the detector in the nonbolometric mode was much faster and was beyond the instrument resolution. With a picosecond N2 laser, the output showed an instrument limited duration of 2 ns. The detectivity could not be determined in the nonbolometric mode due to the extremely low noise. The superconducting film quality is critical to the performance of these detectors.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
HoiSing Kwok, Jim P. Zheng, and Q. Y. Ying "Y-Ba-Cu-O thin films as high-speed IR detectors", Proc. SPIE 1292, Superconductivity Applications for Infrared and Microwave Devices, (1 October 1990);


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