摘要
受热效应、光学损伤与非线性效应等因素的限制,单纤的功率提高困难。因此通过光学元件将多束激光进行合束的光束合成技术应运而生。光谱合束方案具有结构简单,合束光束质量好等优点,逐渐成为了合束技术发展的主流。简要介绍了光纤激光光谱合束的几种常见合束方案,对比分析了几种合束技术的优缺点。对光谱合束中存在的光栅热畸变问题,从理论研究和实验研究两个方面进行了针对性的分析与讨论,并对光谱合束未来的发展趋势进行了展望。
The output power of single fiber is limited by the thermal effects,laser damage threshold,and nonlinear optical effects.Beam combining technology has been proposed to break through the limit of single fiber and achieve higher output power fiber laser.Spectral beam combining technology has the advantages of good beam quality and simple structure,which stands out among many beam combining technologies.We review several typical kinds of spectral beam combining technologies of fiber lasers,including their principles,current status,advantages and disadvantages.The recent progress of thermal distortion of the grating was introduced and discussed from the aspects of theoretical and experimental research,and the development trend of spectral beam combining technology are prospected.
作者
王汉斌
杨依枫
袁志军
咸昱桥
刘美忠
邬文杰
李炳霖
何兵
周军
Wang Hanbin;Yang Yifeng;Yuan Zhijun;Xian Yuqiao;Liu Meizhong;Wu Wenjie;Li Binglin;He Bing;Zhou Jun(Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;School of Physics,Harbin Institute of Technology,Harbin 150001,China;School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2020年第12期23-42,共20页
High Power Laser and Particle Beams
基金
广东省重点领域研究开发计划项目(2018B090904001)
国家重点研发计划项目(2018YFB0504500)
国家自然科学基金项目(61735007,61805261,61705243)
上海市优秀技术带头人计划项目(17XD1424800)
上海市自然科学基金项目(16ZR1440100,16ZR1440200)。
关键词
激光光学
光谱合束
热效应
光纤激光器
光束质量
laser optics
spectral beam combining
thermal analysis
fiber laser
beam quality
作者简介
王汉斌(1994-),男,博士研究生,主要从事光纤激光光谱合束技术与光栅性能分析方面的研究,hanbin_wang@foxmail.com;通信作者:何兵(1975-),男,博士,研究员,博士生导师,主要从事高功率光纤激光和光谱合束方面的研究,bryanho@mail.siom.ac.cn;周军(1972-),男,博士,研究员,博士生导师,主要从事高功率光纤激光和光谱合束方面的研究,junzhousd@siom.ac.cn。
