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12 March 2019 4.115kW near diffraction-limited high quality fiber laser based on 25/400μm fiber
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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.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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