kW-level 1030 nm polarization-maintained fiber laser with narrow linewidth and near-diffraction-limited beam quality

Chu Qiuhui; Zhao Pengfei; Lin Honghuan; Liu Yu; Li Chengyu; Wang Bopeng; Guo Chao; Tang Xuan; Tang Chuanxiang; Jing Feng

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kW-level 1030 nm polarization-maintained fiber laser with narrow linewidth and near-diffraction-limited beam quality

机译：KW级1030 NM偏振保持光纤激光，具有窄线宽和近衍射限制光束质量

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kW-level 1030 nm polarization-maintained fiber laser with narrow linewidth and near-diffraction-limited beam quality is demonstrated. Theoretical simulations based on the power balance equation are first performed to optimize the system parameters of the 1030 nm ytterbium-doped fiber laser for the maximum suppression of amplified spontaneous emission (ASE). With the optimized parameters, both the copumped and counterpumped MOPA lasers are implemented to obtain an output power of 1 kW. In both cases, the ASE suppression ratio reaches 40 dB with a 3 dB linewidth of about 0.14 nm, and the polarization extinction ratio is about 12 dB at 1 kW of output power. The beam quality starts degrading at 900 W of output power in the copumped structure, but maintains nearly single mode (M-x(2),M-y(2)) = (1.07, 1.12) until power is over 1 kW in the counterpumped structure. (C) 2018 Optical Society of America

机译：kW级1030nm偏振保持的光纤激光器，具有窄线宽和近衍射限制光束质量。首先进行基于功率平衡方程的理论模拟，以优化1030nm ytterbium掺杂光纤激光器的系统参数，以最大限度地抑制扩增的自发发射（ASE）。利用优化的参数，实现了Cupumped和Excordpumped MoPA激光器以获得输出功率为1 kW。在这两种情况下，ASE抑制比率达到40dB，具有约0.14nm的3 dB线宽，并且偏振消光比在1kW的输出功率下约为12dB。光束质量在块结构中以900W的输出功率降低，但保持接近单一模式（M-X（2），M-Y（2））=（1.07,12）直到功率超过1 kW，在反击结构中超过1 kW。（c）2018年光学学会

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来源
《Applied optics》 |2018年第12期|共5页
作者
Chu Qiuhui; Zhao Pengfei; Lin Honghuan; Liu Yu; Li Chengyu; Wang Bopeng; Guo Chao; Tang Xuan; Tang Chuanxiang; Jing Feng;
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China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

Tsinghua Univ Dept Engn Phys Accelerator Lab Beijing 100084 Peoples R China;

China Acad Engn Phys Res Ctr Laser Fus Mianyang 621900 Peoples R China;

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kW-level 1030 nm polarization-maintained fiber laser with narrow linewidth and near-diffraction-limited beam quality

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