ABSTRACT
Based on heat conduction theory, a theoretical model of the mercury cadmium telluride detector irradiated by repetition frequency pulsed laser was built. The method of applying the heat source on the focal plane of the detector was used to analyze the thermal effect of the mercury cadmium telluride (HgCdTe) detector. The difference of the thermal effect was compared under different repetition frequencies of the laser. The results show that the energy of the laser was mainly absorbed by the HgCdTe photosensitive layer and the high temperature field was mainly distributed near the interface between the HgCdTe layer and the cadmium zinc telluride (CdZnTe) layer when the HgCdTe detector was irradiated by a repetitive frequency pulse laser. There was almost no temperature accumulation effect when the frequency was 1 KHz and 10 KHz. When the frequency is 100 KHz, the peak temperature increased with the increase in the number of pulses, and there was an obvious temperature accumulation effect.
