2×3 kW bidirectional output fiber oscillator employing spindle-shaped ytterbium-doped fiber  

作　　者：Lingfa Zeng Baolai Yang Penglin Zhong Huan Yang Peng Wang Zhiping Yan Xiaoming Xi Liangjin Huang Hanwei Zhang Xiaolin Wang Zhiyong Pan Kai Han Zefeng Wang 曾令筏;杨保来;钟鹏林;杨欢;王鹏;闫志平;奚小明;黄良金;张汉伟;王小林;潘志勇;韩凯;王泽锋(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China;Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China [2]Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Optics Letters》2024年第7期42-46,共5页中国光学快报（英文版）

基　　金：supported by the Funding for Distinguished Yong Scholars of Hunan Province(No.2023JJ10057);the Training Program for Excellent Young Innovations of Changsha(No.kq2305038);the Basic Scientific Research Program(No.JCKY2021525B015).

摘　　要：A 2×3 kW-level bidirectional output fiber oscillator is realized by combining the specially designed spindle-shaped ytterbium-doped fiber,non-wavelength-stabilized 976-nm LDs,and grating bandwidth optimization to balance transverse mode instability and stimulated Raman scattering.The maximum output powers at both ends are 3265 and 2840 W,respectively,with a total efficiency of 73.2%.The M^(2) factors of the lasers at both ends are about 1.98 and 2.38,respectively.The beam profile at both ends shows that a bidirectional output annular beam fiber oscillator has been realized,which has great potential in practical applications.

关 键 词：fiber laser bidirectional output fiber oscillator spindle-shaped ytterbium-doped fiber 

分 类 号：TN248[电子电信—物理电子学]