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Thermal Effect of Laser Radiation on Photoconductive HgCdTe Detector
Li Xiu-Qian, Xiang-Ai Cheng and Zhu-Guo Dou

Experimental studies were carried out on the response characteristics of a photoconductive HgCdTe detector irradiated by an off-band CW CO2 laser. A new phenomenon was observed which was very different from that in which an ‘in-band’ laser was employed. Theoretical analysis and numerical simulation suggested that the major response of the detector to the radiation of off-band light is a thermal effect whereas that of the radiation of ‘in-band’ light is an optical effect.

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