Stimulated Brillouin scattering suppression in fiber amplifiers with multi-point pump

Haichuan Zhao; Mengmeng Tao; Hongwen Chen; Zhenbao Wang; Yong Wu; Junjie Wu; Lei Zhang; Ping Wang; Gang Feng; Pengling Yang

doi:10.1117/12.2656860

22 December 2022 Stimulated Brillouin scattering suppression in fiber amplifiers with multi-point pump

Haichuan Zhao, Mengmeng Tao, Hongwen Chen, Zhenbao Wang, Yong Wu, Junjie Wu, Lei Zhang, Ping Wang, Gang Feng, Pengling Yang

Author Affiliations +

Proceedings Volume 12459, Sixth International Symposium on Laser Interaction with Matter; 124591E (2022) https://doi.org/10.1117/12.2656860
Event: Sixth International Symposium on Laser Interaction with Matter (LIMIS 2022), 2022, Ningbo, China

Abstract

A new scheme for Stimulated Brillouin Scattering (SBS) suppression is proposed based on multi-point pump technique. The pump power is coupled into the double-clad fiber by several pump points instead of one fiber combiner, which will rearrange the pump power distribution along the active fiber and influence the amplifier process of SBS light. The numerical simulation indicates that SBS is effectively suppressed in a fiber amplifier with an output up to 700W and a 1kHz line-width by virtue of the configuration. Besides, the SBS threshold demonstrates a 3.7 times increase compared with an strain allied scheme.

Citation Download Citation

Haichuan Zhao, Mengmeng Tao, Hongwen Chen, Zhenbao Wang, Yong Wu, Junjie Wu, Lei Zhang, Ping Wang, Gang Feng, and Pengling Yang "Stimulated Brillouin scattering suppression in fiber amplifiers with multi-point pump", Proc. SPIE 12459, Sixth International Symposium on Laser Interaction with Matter, 124591E (22 December 2022); https://doi.org/10.1117/12.2656860

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