高功率光纤激光的光束合成:进展、动向与展望(特邀)  

Beam Combining of High Power Fiber Lasers:Progress,Trend and Prospects(Invited)

作　　者：周朴[1] 粟荣涛 李灿 马阎星 张雨秋 李俊 吴坚 王小林[1,2,3] 冷进勇 Zhou Pu;Su Rongtao;Li Can;Ma Yanxing;Zhang Yuqiu;Li Jun;Wu Jian;Wang Xiaolin;Leng Jinyong(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,Hunan,China;Hunan Provincial Key Laboratory of High Energy Laser Technology,National University of Defense Technology,Changsha 410073,Hunan,China;Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,Hunan,China)

机构地区：[1]国防科技大学前沿交叉学科学院,湖南长沙410073 [2]国防科技大学高能激光技术湖南省重点实验室,湖南长沙410073 [3]国防科技大学南湖之光实验室,湖南长沙410073

出　　处：《中国激光》2024年第19期37-52,共16页Chinese Journal of Lasers

基　　金：国家重点研发计划项目(2022YFB3606000);湖南省创新群体项目(2019JJ10005)。

摘　　要：光束合成是突破单纤激光功率输出极限、获得更高功率激光输出的有效技术方案。近年来,功率合成、光谱合成、相干合成等多种类型的光束合成均取得突破性进展,输出功率与单纤最高功率值相比,均实现了量级上的提升。多种光束合成类型的复合应用,有望进一步提升激光功率、压缩激光脉宽,实现更高性能的激光系统。为此分析高功率光纤激光光束合成的最新研究进展,提炼研究动向,概括研究特点,对未来更多类型光束合成系统研发面临的挑战和关键技术进行分析与展望。Significance Beam combining of fiber laser is an effective way to break the power limitation of single fiber laser and to achieve more powerful laser beams.In recent years,significant breakthrough has been achieved in power combining,spectral beam combining and coherent beam combining.In this paper,the recent progress of beam combining of fiber lasers is reviewed,the trend and the characteristics are summarized,and the challenges for further increasing the performance of laser beam combining systems are discussed.Progress All fiber signal combiner is widely used for power combining because of the advantage of compact structure.In 2013,IPG Photonics Corporation developed the world’s first 100 kW high-power fiber laser system,which was based on 90 fiber lasers with kW level output power.And such a 100 kW laser system was successfully applied to laser processing.In 2021,the 100 kW level fiber laser systems,which were power combined by using all fiber signal combiner,were reported by University of South China and Raycus Fiber Laser Technologies Corporation.In 2024,high-power fiber laser systems from 150 kW to 200 kW were reported by BWT Corporation,Han’s Laser Technology Industry Corporation,and Maxphotonics Corporation,respectively.For spectral beam combining,most of the high power outputs were achieved by using reflective diffraction gratings or dichroic mirrors as the beam combination components.In 2016,Lockheed Martin achieved a fiber laser system with output power of>30 kW by spectral beam combining of 96 individual fiber lasers based on reflective diffraction grating.Using the similar method,10 kW level spectral beam combining systems were developed by Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences and China Academy of Engineering Physics in the same year.In recent years,the output power of the diffraction grating based spectral beam combining system was increased rapidly.By spectral beam combining of 60 fiber lasers,output power of 150 kW was obtained by Shanghai Institute of O

关 键 词：光纤激光 高功率 光束合成 功率合成 光谱合成 相干合成 复合合成 人工智能 

分 类 号：TN248[电子电信—物理电子学]