Yb-doped aluminophosphosilicate fiber amplifier with 244 pm linewidth and near diffraction limited beam quality for beam combination

被引：0

作者：

Sun, Shihao ^{[1
,2
,3
]}

Li, Fang ^{[1
]}

Gao, Cong ^{[1
]}

Chu, Qiuhui ^{[1
]}

Shen, Changle ^{[1
]}

Liu, Nian ^{[1
]}

Dai, Jiangyun ^{[1
]}

He, Honglei ^{[1
]}

Zhang, Lihua ^{[1
]}

Jiang, Lei ^{[1
]}

Lv, Jiakun ^{[1
]}

Jia, Baonan ^{[2
]}

Lu, Pengfei ^{[2
]}

Zheng, Ye ^{[3
]}

Wang, Junlong ^{[3
]}

Lin, Honghuan ^{[1
]}

Wang, Jianjun ^{[1
]}

机构：

[1] Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang,621900, China

[2] State Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, China

[3] Beijing Institute of Aerospace Control Devices, Beijing, China

来源：

Optical Fiber Technology | 2022年 / 74卷

基金：

中国国家自然科学基金;

关键词：

Chemical vapor deposition - Diffraction - Fiber amplifiers - Fiber lasers - Fibers - Linewidth - Ytterbium compounds;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Yb-doped aluminophosphosilicate fiber was fabricated by the combination system of chelate precursor doping technique and the modified chemical vapor deposition system. The technical details of the fabrication process were optimized to ensure the same elemental concentration ratio of Al/P. The capability of this fiber for the beam combining application was investigated based on a narrow linewidth fiber laser system. This fiber presented the output power of 1783 W with a slope efficiency of 83.7 % and a 20 dB root-mean-square linewidth of 0.244 nm with no nonlinear effects in the laser spectrum. Near-diffraction-limited beam quality was also observed with a M2 factor less than 1.27. In conclusion, this fiber presented an attractive laser performance for beam combination through the comprehensive optimization of fabrication technique and narrow linewidth laser system. © 2022 Elsevier Inc.

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