10.6μmCO2激光对HgCdTe探测器破坏阈值的实验研究

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10.6μmCO2激光对HgCdTe探测器破坏阈值的实验研究
张红[1] 薛建国[2] 成斌[2] 王非[2] 王冰[2][1]四川大学物理科学与技术学院,四川成都610065 [2]中国人民解放军63891部队,河南洛阳471003摘　要:用10．6μm脉冲CO2激光辐照PC型HgCdTe光电探测器进行破坏阈值实验研究，通过政变激光辐照到探测器上的能量密度直至探测器损伤、破坏，得出了HgCdTe探测器的破坏阈值；利用一维半无限大模型计算了激光损伤探测器的破坏阈值，并与实验值进行了比较。分析表明，实验误差不仅来自于探测器不同的材料性质，而且与光斑的大小，探测器的制作工艺等多种因素有关；分析了不同脉宽的激光脉冲对破坏阈值的影响，得出了合理的破坏阈值。[著者文摘]
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# ?, y* K3 D3 u3 ?. ?; N7 N关键词:脉冲CO2激光 损伤阈值 PC型HgCdTe探测器 光电探测器
分类号:　TN248[免标]文献标识码：A文章编号：1003-501X（2006）05-0041-03栏目信息：激光技术
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! j! m  U5 T% B( w! U( sExperiment study on the damage thresholds of HgCdTe detector irradiated by 10.6μm CO2 laserZHANG Hong, XUE Jian-guo, CHENG Bin, WANG Fei, WANG Bing 1. College of Physics Science and Technology, Sichuan University, Chengdu 610065, China; 2. The Chinese People＇s Liberation Army No.63891, Luoyang 471003, China Abstract:Under the irradiation of the 10.6μm CO2 laser at various energy density, the output signal of PC-type HgCdTe detectors has been studied, and the damage thresholds are determined. In the mean time, damage thresholds of detector irradiated by laser were calculated by using one dimension semi-infinite solid model. The calculation was compared with the experiment result, and the possible reason of the error is not only the different material property of detector, but also the detector＇s technics and the laser beam radius. The effect of varied laser pulse wide is analyzed and reasonable damage thresholds are found.[著者文摘]
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Key words:CO2 laser; Damage thresholds; PC-type HgCdTe detector; Photodetectors