To study the influence of long-wave laser on the detection performance of infrared imaging detector,interfer-ence experiments on infrared detectors are carried out using a 10.6 μm laser.According to the image acquisition re-sults,with the increase of laser power,the type of interference can be categorized into spot-invariant zone,expansion zone and damage zone,and the corresponding power threshold of each area is 9.35 x 10-6,2.99 x 10-4 and 9.35 x 10-4 mW/cm2,respectively.The differences of spot characteristics under varied laser power are mainly attributed to the difference of laser action mechanism.The interference effect before the damage zone is mainly generated by elec-tronic effect,while the damage zone is dominated by thermal accumulation.The results of this study enrich the under-standing of the interference effect of long-wave laser on long-wave infrared imaging system,and provide a basis for the application of long-wave laser interference.
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