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] China Acad Engn Phys, Laser Fus Res Ctr, Mianyang 621900, Peoples R China

[2] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Minist Educ, Beijing, Peoples R China

[3] Beijing Inst Aerosp Control Devices, Beijing, Peoples R 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：

Yb-doped silica fiber; Narrow linewidth; Near -diffraction -limited beam quality; Beam combination; LASER;

D O I：

10.1016/j.yofte.2022.103115

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

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.

引用

页数：6

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