Spectrum filtering in 1kW power combining pulse fiber laser

Lingchao Kong; Xiubing Liang; Yongxiong Chen; Zhenfeng Hu

doi:10.1117/12.2605448

24 November 2021 Spectrum filtering in 1kW power combining pulse fiber laser

Lingchao Kong, Xiubing Liang, Yongxiong Chen, Zhenfeng Hu

Proceedings Volume 12060, AOPC 2021: Advanced Laser Technology and Applications; 120600K (2021) https://doi.org/10.1117/12.2605448
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

We demonstrate a power combining pulse laser system with 1 kW average power output based on spectrum filtering of four subset pulse amplifiers. The output spectrum with and without spectrum filtering are compared. The result shows that, without spectrum filtering, nonlinear spectrum component from subset amplifier will accumulate along the QBH fiber and leads to serious spectrum broadening as well as stimulated Raman scattering (SRS) effect. By spectrum filtering with a band pass filter (BPF) inside the subset amplifier, nonlinear spectrum component is successfully mitigated and high purity spectrum pulse laser output is also achieved at the output power of 1kW.

Citation Download Citation

Lingchao Kong, Xiubing Liang, Yongxiong Chen, and Zhenfeng Hu "Spectrum filtering in 1kW power combining pulse fiber laser", Proc. SPIE 12060, AOPC 2021: Advanced Laser Technology and Applications, 120600K (24 November 2021); https://doi.org/10.1117/12.2605448

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