Xi WANG, Qing YE, Xiao DONG, Wu-Hu LEI, Tong-Lin LYU, Yan-Tin GUO, Yi-Hua HU. Experimental study of PbS detector irradiated by 2.79 μm mid-infrared laser[J]. Journal of Infrared and Millimeter Waves, 2022, 41(1): 2021012
- Journal of Infrared and Millimeter Waves
- Vol. 41, Issue 1, 2021012 (2022)
Fig. 1. Sketch map of experimental system
Fig. 2. Response voltage vs laser energy
Fig. 3. Response voltage vs time（E=220mJ，PRF=10Hz）
Fig. 4. Damage morphology of PbS detector with laser fluence of 366.69J/cm2：（a）before irradiation，（b）damage overall appearance，（c）damage spot edge，（d）damage spot center
Fig. 5. Particles attached to the surface of sapphire window，（a）149.22J/cm2，（b）366.69J/cm2
Fig. 6. Schematic diagram of PbS detector
Fig. 7. Theoretical model of PbS detector irradiated by 2.79 μm laser
Fig. 8. Temperature distribution with laser fluence of 10 J/cm2,（a）contour of temperature distribution in PbS detector,（b）temperature distribution on PbS surface,（c）temperature distribution on axis
Fig. 9. Schematic diagram of air flow trajectory inside the detector
Fig. 10. The relationship between maximum temperature of PbS and laser energy fluence
Fig. 11. The relationship between the maximum temperature of PbS and the number of pulses under different repetition frequencies
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