Near diffraction limit output of a coiled 20/400 μm Yb-doped fiber laser

Xuejiao Wang; Zehui Wang; Yusheng Huang; Qirong Xiao; Dan Li; Guijie Yue; Ping Yan

doi:10.1117/12.2542147

12 March 2020 Near diffraction limit output of a coiled 20/400 μm Yb-doped fiber laser

Xuejiao Wang, Zehui Wang, Yusheng Huang, Qirong Xiao, Dan Li, Guijie Yue, Ping Yan

Proceedings Volume 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications; 1143705 (2020) https://doi.org/10.1117/12.2542147
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

This paper presented a near diffraction limit output of YDFL employing 20/400 μm gain fiber. By coiling the fiber at different radius, different beam quality output was obtained. Combined with the BPM analysis, including the impact of fiber bending and the eccentric core loss induced by fusion splicing on beam quality, the bending radius was optimized to be 4.5 cm. Then, two optimized bending fiber parts were added in our FL system. Accordingly, an excellent beam quality output of M² = 1.06 under the output power of 50 W was achieved successfully.

Citation Download Citation

Xuejiao Wang, Zehui Wang, Yusheng Huang, Qirong Xiao, Dan Li, Guijie Yue, and Ping Yan "Near diffraction limit output of a coiled 20/400 μm Yb-doped fiber laser", Proc. SPIE 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 1143705 (12 March 2020); https://doi.org/10.1117/12.2542147

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