Dr. Guanpin Ren Profile

Dr. Guanpin Ren

at Chengdu Univ of Technology

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Proceedings Article | 28 February 2021 Paper

Influence of power ratio of the main amplifier to master oscillator on slope efficiency

Shuang Liu, Xuewen Long, Guanpin Ren, Xiaoqin Zhang, Min Yan, Xiaofeng Chen, Xiaofeng Zhao

Proceedings Volume 11781, 117810N (2021) https://doi.org/10.1117/12.2591383

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In a typical multi-kW industrial fiber laser, the influence of the main amplifier to master oscillator power ratio on laser performance has been fully demonstrated. An optimized output power ratio is obtained to be ~5, which can provide the maximum main amplifier slope efficiency of ~78.2% at multi-kW laser output. In this case, the laser setup was kept at ∼2.6kW for 1h and the output power presented a relatively small power degradation of 0.36%. It was found the injected seed power has no remarkable effect on the optimal slope efficiency for industry fiber laser. The present results indicated that a suitable power ratio between the main amplifier and the oscillator is of great importance for the power scaling up and high stability of industry fiber laser.

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