高功率连续波掺镱光纤激光器研究进展  

Recent advances in high-power continuous-wave ytterbium-doped fiber lasers

作　　者：党文佳 李哲[2] 李玉婷 卢娜 张蕾 田晓 杨慧慧 DANG Wen-jia;LI Zhe;LI Yu-ting;LU Na;ZHANG Lei;TIAN Xiao;YANG Hui-hui(School of Science,Xi’an Aeronautical University,Xi’an 710077,China;State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China)

机构地区：[1]西安航空学院理学院,陕西西安710077 [2]中国科学院,西安光学精密机械研究所,瞬态光学与光子技术国家重点实验室,陕西西安710119

出　　处：《中国光学》2020年第4期676-694,共19页Chinese Optics

基　　金：国家自然科学青年基金项目(No.11804264);陕西省自然科学基础研究计划资助项目(No.2019JQ-914);陕西省创新能力支撑计划项目(No.2019KRM093);陕西省教育厅专项科研计划项目(No.17JK0394、No.19JK0429)。

摘　　要：高功率连续波掺镱光纤激光器因具有电光效率高、光束质量好、热管理方便等优点,在工业加工、军事国防、科学研究等领域得到广泛应用,但是高功率条件下的非线性效应和热效应限制了其输出功率的进一步提升。基于此,本文重点分析了受激拉曼散射非线性效应和热致模式不稳定现象的形成机理和抑制方法,为高功率光纤激光系统的设计与集成提供了参考,并详细介绍了2015年以来为克服两种因素的影响所取得的最新研究成果,最后展望了高功率连续波掺镱光纤激光器的发展趋势。High power continuous-wave ytterbium-doped fiber lasers have unique advantages such as high electro-optical efficiency,excellent beam quality and good thermal management.For these reasons,these fiber lasers are widely used in industrial processing,national defense and military,and scientific research.However,their non-linear and thermal effects at high-power conditions limit the further improvement of their output power.In this paper,the formation mechanism and corresponding suppression methods of stimulated raman scattering and thermally induced mode instability are analyzed.We hope that these analyses can provide some reference for the design and integration of high-power fiber laser systems.The research results for overcoming these limited factors introduced since 2015 are then discussed in detail.This paper is concluded by predicting the development prospects of high-power continuous-wave ytterbium-doped fiber lasers.

关 键 词：高功率光纤激光器 主振荡功率放大器 受激拉曼散射 模式不稳定 

分 类 号：O436[机械工程—光学工程]