650 W All-Fiber Single-Frequency Polarization-Maintaining Fiber Amplifier Based on Hybrid Wavelength Pumping and Tapered Yb-Doped Fibers

被引：12
作者：
Jiang, Wanpeng [1 ,2 ,3 ]
Yang, Changsheng [2 ,3 ,4 ,5 ,6 ]
Zhao, Qilai [1 ,2 ,3 ]
Gu, Quan [2 ,3 ,4 ]
Huang, Jiamin [2 ,3 ,4 ]
Jiang, Kui [2 ,3 ,4 ]
Zhou, Kaijun [2 ,3 ]
Feng, Zhouming [1 ,2 ,3 ,6 ]
Yang, Zhongmin [1 ,2 ,3 ,5 ,7 ]
Xu, Shanhui [1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ]
机构：
[1] South China Univ Technol, Sch Phys & Optoelect, Guangzhou 510640, Peoples R China
[2] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China
[3] South China Univ Technol, Inst Opt Commun Mat, Guangzhou 510640, Peoples R China
[4] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
[5] Guangdong Engn Technol Res & Dev Ctr Special Opt, Guangzhou 510640, Peoples R China
[6] Guangdong Engn Technol Res & Dev Ctr High Perform, Zhuhai 519031, Peoples R China
[7] South China Univ Technol, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Guangzhou 510640, Peoples R China
[8] Hengqin Firay Sci Tech Co Ltd, Zhuhai 519031, Peoples R China
来源：
PHOTONICS | 2022年 / 9卷 / 08期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
single frequency; high power; tapered Yb-doped fiber; hybrid wavelength pumping; HIGH-POWER; MODAL INSTABILITIES; LASER; STRATEGIES;
D O I：
10.3390/photonics9080518
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Based on hybrid wavelength pumping and tapered Yb-doped fibers (T-YDFs), a 650 W all-fiber single-frequency polarization-maintaining fiber amplifier was demonstrated experimentally at 1030 nm. Different pump power ratios in the T-YDF-based power-amplifier stage were proposed to investigate their influence on the transverse mode instability (TMI) effect. The highest TMI threshold was obtained when the pump power ratio of 940 nm to 976 nm was 1:4.4. A measured M-2 factor of 1.7 and a polarization extinction ratio of 14 dB at the maximum output power were obtained. To the best of our knowledge, these results exhibit the highest output power of any all-fiber single-frequency polarization-maintaining fiber amplifiers created up to now.
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页数：9
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