Domestic 20/400 Yb-Doped Fiber

4 kW TMI-free

The homemade 20 μm/400 μm double-clad Yb-doped fiber achieves 4 kW laser output in a MOPA system with near-diffraction-limited beam quality and no transverse mode instability.

Fang, Li · Zhang, Chun · Dai, Jiangyun · Shen, Changle · Liu, Nian · Yi, Chen · Jiang, Lei · Zhang, Lihua · Lü, Jiakun · Shu, Qiang · Liao, Ruoyu · Hongbing, Zhou · Gao, Cong · Honghuan, Lin · Zhao, Longbiao · Wang, Jianjun · Feng, Jing

Zhongguo Jiguang/Chinese Journal of Lasers 2023

Specifications

最大输出功率

{'zh': '4015', 'en': ''} W

斜率效率

{'zh': '81', 'en': ''} %

拉曼抑制

{'zh': '31', 'en': ''} dB

Advantages

M² ~1.39 at highest power