光束参量积对半导体激光器光束质量的评估  

Evaluation of beam quality of semiconductor lasers by beam parameter product

作　　者：杨孝敬 焦清局[1,3] 王乙婷 YANG Xiaojing;JIAO Qingju;WANG Yiting(College of Computer and Information Engineering,Anyang Normal University,Anyang 455000,China;International WIC Institute,Beijing University of Technology,Beijing 100124,China;School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]安阳师范学院计算机与信息工程学院,安阳455000 [2]北京工业大学国际WIC研究院,北京100124 [3]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《激光技术》2018年第6期859-861,共3页Laser Technology

基　　金：国家自然科学基金资助项目(61040010);国家语委科研规划资助项目(YB135-50);河南省科技攻关计划资助项目(132102210227)

摘　　要：为了解决传统方法中用光束参量积来评估激光光束质量的不足,基于半导体激光器的光束特性,采用了光束参量积Mq2因子来评估半导体激光器光束质量,进行了理论分析和实验验证,取得了快轴准直焦距(FAC)分别为1100μm和600μm的各6个组合光束以及FAC为600μm的10个组合光束的有效焦距长度数据。结果表明,L_(//)和θ_⊥的变化越明显,光束质量参量积M_q^2因子的变化越明显;测量值和计算值之间的误差小于5%。这一结果对高能激光的光束质量评估是有帮助的。In order to solve the deficiency of the traditional evaluation method of beam parameter product on laser beam quality,based on the characteristics of semiconductor laser beam,the effective focal length data of 6 combined beams of fast axis collimator(FAC)with focal length 1100μm,6 combined beams of FAC with focal length 600μm,and 10 combined beams of FAC with focal length 600μm were obtained.The theoretical analysis and experimental verification were carried out.The results show that the more obvious the change of L//andθ⊥is,the more obvious the change of beam parameter product of beam quality is.The error between the measured value and the calculated value is generally less than 5%.This result is helpful for evaluating the beam quality of high energy laser.

关 键 词：激光器 光束质量 准直 聚焦透镜 

分 类 号：TN248.4[电子电信—物理电子学] TN202