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

doi:10.1117/12.2591383

28 February 2021 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, 4th Optics Young Scientist Summit (OYSS 2020); 117810N (2021) https://doi.org/10.1117/12.2591383
Event: Optics Frontier: Optics Young Scientist Summit, 2020, Ningbo, China

Abstract

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.

Citation Download Citation

Shuang Liu, Xuewen Long, Guanpin Ren, Xiaoqin Zhang, Min Yan, Xiaofeng Chen, and Xiaofeng Zhao "Influence of power ratio of the main amplifier to master oscillator on slope efficiency", Proc. SPIE 11781, 4th Optics Young Scientist Summit (OYSS 2020), 117810N (28 February 2021); https://doi.org/10.1117/12.2591383

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