漫透射成像法激光强度时空分布测量装置  

Measurement system for laser intensity distribution based on diffused transmission imaging

作　　者：庞淼[1] 袁学文[1] 高学燕[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2010年第12期2839-2842,共4页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：提出用CCD漫透射成像法测量激光强度时空分布和激光功率,给出了测量原理,简要叙述了装置总体结构,介绍了测量装置各部分,给出了散射屏的散射特性,重点分析了光路布局、镜头焦距、光圈、景深、滤光片的参数选择,介绍了数据处理软件,给出了激光强度分布测量实验结果。结果表明:漫透射成像法测量激光强度时空分布是可行的,该装置测量强度分布分辨力高达5 mm;测量功率准确、可靠,测量不确定度小于6%,使用方便,实现了在小空间内对大光斑进行功率和强度分布的同时准确测量。CCD diffused transmission imaging method is used to measure laser intensity distribution and power.The measurement principle of the design is presented.The designed system's configuration is summarized.There are particular introduction for each part of the system.The scattering properties of the diffusion screen is researched through experiment.There is highlighting information on the design of optical system,light path,reflector,focal length and aperture of camera lens,and depth of field of CCD camera are respectively introduced.The data processing software are introduced.The design implements large laser spot intensity distribution measurement and power measurement in small space at the same time,it has the advantages of high resolution(5 mm) for intensity distribution measurement and high accuracy(6%) for power measurement.

关 键 词：漫透射 成像法 激光强度 时空分布 测量装置 based 强度分布 数据处理软件 激光功率 测量不确定度 总体结构 准确测量 实验结果 散射特性 镜头焦距 分布测量 测量原理 参数选择 散射屏 滤光片 

分 类 号：O4[理学—物理]