CCD光敏面上激光能量的网状分布  

Mesh distribution of laser energy on the photosensitive surface of CCD

作　　者：王彦斌 刘艳芳 陈前荣 李华 周旋风 任广森 朱荣臻 Wang Yanbin;Liu Yanfang;Chen qianrong;Li Hua;Zhou Xuanfeng;Ren Guangsen;Zhu Rongzhen(Luoyang Electronic Equipment Test Center of China,Luoyang 471003,China)

机构地区：[1]中国洛阳电子装备试验中心,河南洛阳471003

出　　处：《红外与激光工程》2018年第A01期125-131,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金（11504420）

摘　　要：采用波长为1064nm的脉冲激光从30m的距离辐照可见光面阵CCD时，在CCD光敏面上观察到了激光能量和串扰点的网状分布。发现相邻格点的间距约为100μm，并且该间距在增大入射激光能量和减小前置光学系统F数的过程中保持不变，但是激光中心主光斑和周围格点处的小光斑随着F数的减小而逐渐增大。当F数为2．8时，可以清晰看到周围格点上的每一个光斑都是光学系统光阑的几何像。这一现象的相关研究将促进激光在光学系统中传输以及激光与物质相互作用等方面的深入研究。The mesh distribution of laser energy and crosstalk points on the photosensitive surface of visible array CCD was observed when it was irradiated by 1 064 nm pulsed laser from a distance of 30 m. It was found that the pitch of adjacent lattice was about 100 μm and remained unchanged as the incident laser energy increased or F-number of the front optical system decreased, but the center main spot and the spots at the ambient lattices could enlarge little by little with the decrease of F-number. It was clearly seen that every spot at the ambient lattices was geometric image of optical system＇s stop when F- number is 2.8. There is no doubt that the novel phenomena are firstly reported and the related research will certainly promote deep investigation on the laser propagation in the optical system and the interaction between laser and material.

关 键 词：激光能量的网状分布 CCD F数 激光 

分 类 号：TN249[电子电信—物理电子学]