激光对像增强器干扰的实验研究  

Experimental Research on Laser Interference of Image Intensifier

作　　者：谢运涛[1] 张玉钧[1] 王玺[1] 孙晓泉[1] XIE Yun-tao;ZHANG Yu-jun;WANG Xi;SUN Xiao-quan(State Key Laboratory of Pulsed Power Laser Technology,National University of Defense Technology,Hefei 230037,China)

机构地区：[1]脉冲功率激光技术国家重点实验室,合肥230037

出　　处：《光电技术应用》2018年第1期50-53,共4页Electro-Optic Technology Application

摘　　要：为评估激光干扰对像增强器性能的影响,开展了连续激光对像增强器的辐照实验,分析了激光辐照对其增益特性的影响。实验结果表明,随着入射激光功率增加,像增强器由点饱和逐渐发展到面饱和,饱和光斑直径与入射光强的立方根成线性关系。点饱和所需的激光照度约为1.64μW/cm^2,面饱和所需的激光照度约为1 371.9μW/cm^2。像增强器线性增益允许的最大激光照度约为8.95μW/cm^2,表明点饱和前像增强器处于线性增益状态。随着入射激光功率增加,像增强器像元之间未出现串扰现象,表明像增强器出现了增益饱和,其输出光强受限。In order to evaluate the influence of laser intensifier to the performance of the image intensifier,the irradiation experiment of continuous laser to the image intensifier is carried out and the influence of laser irradiation on the gain characteristics of the intensifier is analyzed.Experimental results show that with the increasing of the incident laser power,the image intensifier is gradually developed to the surface saturation by the point saturation,and the diameter of the saturated spot is linear with the cube root of the incident light intensity.The laser illumination required for the point saturation is about1.64μW/m2and the laser illumination required for the surface saturation is about1371.9μW/m2.The maximum laser illumination allowed for the linear gain of the image intensifier is about8.95μW/m2,which indicates that the point saturation pre-image intensifier is in a linear gain state.With the increasing of the incident laser power,there is no crosstalk between the pixels of the image intensifier,which indicates that the gain saturation of the image intensifier appears,and the output light intensity is strongly affected.

关 键 词：激光辐照 像增强器 串扰 增益饱和 

分 类 号：TN246[电子电信—物理电子学]