强激光光束质量测量系统研制  

Development of a Beam Quality Measurement System for High Power Laser

作　　者：刘福华[1] 戢运峰[1] 王飞[1] 徐作冬[1] 姜畅[1] 

机构地区：[1]西北核技术研究所激光与物质相互作用国家重点实验室,西安710024

出　　处：《现代应用物理》2014年第3期182-186,共5页Modern Applied Physics

摘　　要：分析比较了激光光束质量的评价方法,采用衍射极限因子评价方法和焦平面阵列探测技术,设计并研制了强激光光束质量测量系统。该系统主要由多层介质膜反射分束镜、卡塞格伦式缩束器、聚焦透镜、焦平面阵列及数据处理器等组成,采用哈特曼-夏克波前监测仪对多层介质膜反射分束镜的透射波前进行实时监测。结果表明,系统实现了对中红外、近红外和可见光波长的强激光光束质量实时在线测量,光束质量因子的测量不确定度均小于10%,性能稳定,能够用于实验测量。General evaluation methods of laser beam quality are discussed.A quality meas-urement system for high power laser beams is designed and developed with focal plane array detection technology according to diffraction limit factor method.The system is mainly com-posed of a multi-layer dielectric film reflective beam splitter,a Casey Glenn beam compres-sor,a focusing lens,focal plane arrays,and data processors.The transmitted wavefront of the multi-layer dielectric reflective beam splitter and the wavefront of other optical compo-nents are detected with Hartmann-Shack wavefront monitor.The system has been used for on-line measurement of high power laser beams,and the results show that the system can re-alize on-line measurement of laser beams with mid-infrared,near-infrared and visible wave-length,and the measurement uncertainty is less than 10% （k=2）.

关 键 词：强激光 衍射极限因子 波前监测 焦平面阵列 

分 类 号：TN248[电子电信—物理电子学]