A smart ring-doped fiber laser with tunable beam profile

Lianghua Xie; Rumao Tao; Haokun Li; Yu Li; Shan Huang; Jianjun Wang; Xiaomin Zhang

doi:10.1117/12.2565348

17 April 2020 A smart ring-doped fiber laser with tunable beam profile

Lianghua Xie, Rumao Tao, Haokun Li, Yu Li, Shan Huang, Jianjun Wang, Xiaomin Zhang

Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 114557E (2020) https://doi.org/10.1117/12.2565348
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China

Abstract

In this paper, a ring-doped fiber with Yb³⁺ is designed and fabricated. The intensity distribution of the fiber’s transverse modes is calculated and there are only four types of modes named as HE_m1, TE₀₁, TM₀₁, and EH_m1 in this fiber. Their near-field distribution is also investigated and it changes from thin-ring shape to thick–ring shape. A smart ring-doped fiber laser based on free space coupled optical oscillator is demonstrated firstly in experiment. It delivers 1038 W laser at 1071 nm with 1.6 nm 3dB bandwidth and the slope efficiency is 66.5%. The beam profile could be adjusted intelligently from ring-shape to flattop-shape which is benefit in industrial process.

Citation Download Citation

Lianghua Xie, Rumao Tao, Haokun Li, Yu Li, Shan Huang, Jianjun Wang, and Xiaomin Zhang "A smart ring-doped fiber laser with tunable beam profile", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114557E (17 April 2020); https://doi.org/10.1117/12.2565348

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