Highly-stablized coherent beam combining of short-pulsed fiber laser using active feedback control loop

Song Zhou; Fan Zhang; Xiangjun Xiang; Jianbin Li; Xiongwei Yan; Xinying Jiang; Kaibo Xiao; Minqiang Kang; Ying Deng; Jiangang Zheng; Jingqin Su; Degui Wang; Yongqiang Zuo

doi:10.1117/12.2564667

17 April 2020 Highly-stablized coherent beam combining of short-pulsed fiber laser using active feedback control loop

Song Zhou, Fan Zhang, Xiangjun Xiang, Jianbin Li, Xiongwei Yan, Xinying Jiang, Kaibo Xiao, Minqiang Kang, Ying Deng, Jiangang Zheng, Jingqin Su, Degui Wang, Yongqiang Zuo

Author Affiliations +

Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 114553K (2020) https://doi.org/10.1117/12.2564667
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China

Abstract

We demonstrate a short pulsed Yb-doped fiber laser system comprising two coherently combined fibers with 15ps pulse width and 20MHz repetition rate. The system delivers an average laser power of 6.6mW, of which the RMS error is only 0.13%. The stability is optimal for a coherent beam combining system with multiple combining stages, thanks to an active feedback control loop implemented in the system. The feedback control loop constantly checks the system output power, automatically maximizing and stabilizing it. Implementation of the active feedback control loop is simple, robust, and versatile.

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Song Zhou, Fan Zhang, Xiangjun Xiang, Jianbin Li, Xiongwei Yan, Xinying Jiang, Kaibo Xiao, Minqiang Kang, Ying Deng, Jiangang Zheng, Jingqin Su, Degui Wang, and Yongqiang Zuo "Highly-stablized coherent beam combining of short-pulsed fiber laser using active feedback control loop", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114553K (17 April 2020); https://doi.org/10.1117/12.2564667

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