TEA CO_(2)长波红外激光对红外凝视成像系统探测器组件的损伤效应  

Damage effect of TEA CO_(2) long wave infrared laser on detector assembly of infrared staring imaging system

作　　者：张引 邵俊峰[1] 汤伟[1] ZHANG Yin;SHAO Jun-feng;TANG Wei(Photoelectric Countermeasure Department,Changchun Institute of Optics,Fine Mechanics And Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所光电对抗部,吉林长春130033

出　　处：《光学精密工程》2021年第6期1217-1224,共8页Optics and Precision Engineering

基　　金：“十三五”国防预研项目;激光与物质相互作用国家重点实验室基金资助项目(No.SKLLIM-18-05);长光所旭光人才项目(2019年度)。

摘　　要：为了探究长波红外激光对红外凝视成像系统HgCdTe红外探测器组件的损伤机理,在ANSYS软件仿真研究的基础,开展了9.3μm激光对HgCdTe红外探测器损伤效应实验。通过利用ANSYS软件建立了激光辐照HgCdTe红外探测器的有限元理论仿真模型,获得了9.3μm脉冲CO_(2)激光照射下探测器模型的温升分布,以是否达到熔融温度为判定依据,得到探测器件的仿真损伤阈值。通过开展外场实验获得HgCdTe红外探测器真实工作环境下的损伤阈值,整理并分析实验结果得到HgCdTe红外探测器组件的实验损伤阈值。研究结果表明,基于有限元理论仿真得到的HgCdTe红外探测器模型的损伤阈值为0.54~1.1 J/cm_(2),与实验得到的损伤阈值0.69~1.23 J/cm2结果较为一致。仿真结果和实验结果均和Bartoli理论的计算结果符合得较好,验证了模型和实验结果的合理性。To explore the mechanism of damage caused to a HgCdTe infrared detector by a long-wave in⁃frared laser,the damage caused by a 9.3μm laser to an HgCdTe infrared detector was experimentally ana⁃lyzed.A finite element simulation model of the HgCdTe infrared detector irradiated by the laser was estab⁃lished in ANSYS.The temperature rise distribution of the detector model under CO2 laser irradiation with a 9.3μm pulse was obtained.The theoretical damage threshold of the detector was determined based on whether the melting temperature had been reached.Subsequently,the damage threshold of an HgCdTe in⁃frared detector in an actual working environment was determined through field experiments.The results show that the damage threshold is 0.54-1.1 J/cm2.The simulation results,which predict a damage thresh⁃old of 0.69-1.23 J/cm2,and the experimental results are in agreement with the Bartoli theory and are thus considered to be valid.

关 键 词：红外探测器 有限元 HGCDTE TEA CO_(2)激光 

分 类 号：TN249[电子电信—物理电子学]