基于锥形掺镱光纤实现20 kW高光束质量激光输出  

20 kW fiber laser with high beam quality enabled bytapered ytterbium-doped fiber

作　　者：肖虎[1,2] 潘志勇 陈子伦[1,2] 马鹏飞 刘伟[1,2] 杨欢 闫志平[1,2] 王蒙 奚小明[1,2] 李智贤[1,2] 杨保来 杨林永 黄良金[1,2] 黄值河 曹涧秋[1,2] 王小林 王泽锋[1,2] 陈金宝 Xiao Hu;Pan Zhiyong;Chen Zilun;Ma Pengfei;Liu Wei;Yang Huan;Yan Zhiping;Wang Meng;Xi Xiaoming;Li Zhixian;Yang Baolai;Yang Linyong;Huang Liangjin;Huang Zhihe;Cao Jianqiu;Wang Xiaolin;Wang Zefeng;Chen Jinbao(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China;Nanhu Laboratory,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科学技术大学前沿交叉学科学院,长沙410073 [2]国防科技大学南湖之光实验室,长沙410073

出　　处：《强激光与粒子束》2024年第1期94-96,共3页High Power Laser and Particle Beams

摘　　要：锥形光纤能够有效兼顾非线性效应抑制和模式控制,具备实现高功率、高光束质量光纤激光的潜力。近期国防科技大学研制了锥形掺镱光纤,采用1 018 nm光纤激光后向级联泵浦实现了20.2 kW激光输出,光束质量β因子平均值优于2,拉曼抑制比为33 dB。研究结果展示了锥形光纤在实现万瓦级高光束质量激光方面的优势。The tapered fiber with varied core diameter along the longitudinal direction has a unique advantagein balancing Stimulated Raman Scattering(SRS)suppression and beam quality,making it a promising approach forpurchasing high power laser with high beam quality.Recently,a monolithic high power fiber laser counter pumped by1018 nm fiber lasers has been experimentally established employing tapered ytterbium-doped fiber made in house.Amaximum power of 20.2 kW is achieved with the beam quality factorβ<2 and Raman-suppression ratio of 33 dB.Theresults have demonstrated the great potential of tapered fiber in power scaling to tens of kW fiber laser while achievinggood beam quality.

关 键 词：光纤激光器 级联泵浦 锥形光纤 光束质量 

分 类 号：TN242[电子电信—物理电子学]