10.6μm CO_2激光对HgCdTe探测器破坏阈值的实验研究  

Experiment study on the damage thresholds of HgCdTe detector irradiated by 10.6μm CO_2 laser

作　　者：张红[1] 薛建国[2] 成斌[2] 王非[2] 王冰[2] 

机构地区：[1]四川大学物理科学与技术学院 [2]中国人民解放军63891部队

出　　处：《光电工程》2006年第5期41-43,56,共4页Opto-Electronic Engineering

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,通过改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。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.

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[电子电信—物理电子学]