4.115 kW near diffraction-limited high quality fiber laser based on 25/400μm fiber

Luo Yun; Dong-yang Zou; Cheng-yu Li; Jing Wen; Lin Wang; Yi Shi; Xian-heng Yang; Qi-hua Wang; Peng-fei Zhao; OuYang Li-e; Jian-jun Wang; Feng Jing; Ju-hong Wei; Qiang Luo; Chao-zhi Yang

doi:10.1117/12.2517305

12 March 2019 4.115kW near diffraction-limited high quality fiber laser based on 25/400μm fiber

Luo Yun, Dong-yang Zou, Cheng-yu Li, Jing Wen, Lin Wang, Yi Shi, Xian-heng Yang, Qi-hua Wang, Peng-fei Zhao, OuYang Li-e, Jian-jun Wang, Feng Jing, Ju-hong Wei, Qiang Luo, Chao-zhi Yang

Author Affiliations +

Proceedings Volume 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application; 110233D (2019) https://doi.org/10.1117/12.2517305
Event: Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 2018, Xi'an, China

Abstract

A direct diode-pumped all-fiber-integrated fiber laser based on backward pumping master oscillator power amplifier configuration at 1080 nm, producing maximum output power of 4.115 kW based on 25/400 μm fiber with corresponding linear fitting optical to optical efficiency of 78.39% was demonstrated. The suppression ratio of stimulated Raman scattering is better than 35dB and it can be further optimized by decreasing the seed input power. Near diffractionlimited beam quality (M² are 1.7and 1.6 in the x and y directions based on 4-sigma method) is also achieved at the maximum output power. To the best of our knowledge, this is the first report for 4 kW near-diffraction-limited fiber lasers based on 25/400 μm fiber directly pumped by laser diodes.

Citation Download Citation

Luo Yun, Dong-yang Zou, Cheng-yu Li, Jing Wen, Lin Wang, Yi Shi, Xian-heng Yang, Qi-hua Wang, Peng-fei Zhao, OuYang Li-e, Jian-jun Wang, Feng Jing, Ju-hong Wei, Qiang Luo, and Chao-zhi Yang "4.115kW near diffraction-limited high quality fiber laser based on 25/400μm fiber", Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110233D (12 March 2019); https://doi.org/10.1117/12.2517305

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