2 kW pump-light-stripper-free distributed side-coupled cladding-pumped fiber oscillator

被引：22
|
作者：
Ying, Hanyuan [1 ,2 ,3 ]
Yu, Yu [1 ,2 ,3 ]
Cao, Jianqiu [1 ,2 ,3 ]
Huang, Zhihe [1 ,2 ,3 ]
Pan, Zhiyong [1 ,2 ,3 ]
Wang, Zefeng [1 ,2 ,3 ]
Chen, Jinbao [1 ,2 ,3 ]
机构：
[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
[2] Hunan Prov Key Lab High Energy Laser Technol, Changsha 410073, Hunan, Peoples R China
[3] Hunan Prov Collaborat Innovat Ctr High Power Fibe, Changsha 410073, Hunan, Peoples R China
来源：
LASER PHYSICS LETTERS | 2017年 / 14卷 / 06期
基金：
中国国家自然科学基金;
关键词：
diode-pumped lasers; fiber optics amplifiers and oscillators; ytterbium-doped fiber;
D O I：
10.1088/1612-202X/aa6dc8
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A 2 kW pump-light-stripper-free all-fiber distributed-pumping oscillator fabricated with the distributed side-coupled cladding-pumped Yb-doped fiber is demonstrated for the first time, to the best of our knowledge. An output power of 1969 W with a slope efficiency of 72.2% is obtained. By utilizing the final-section counter-pumping scheme, pure output spectra free from residual pump light are obtained without using any pump light stripper, which demonstrates that the pump light stripper is not indispensable for this configuration. Besides, no stimulated Raman scattering component is observed in the output spectra. The laser has the M-2 factor ranging from 2.0 to 2.6. We believe that the pertinent results are helpful and valuable for designing high-power fiber laser systems.
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页数：5
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