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Investigation of stimulated Raman scattering in high-power co-pumping fiber amplifiers
Zheng, Jinkun1,2; Zhao, Wei1; Zhao, Baoyin1; Li, Zhe1; Li, Gang1; Gao, Qi1; Ju, Pei1; Gao, Wei1; She, Shengfei1; Wu, Peng2
Department瞬态光学技术国家重点实验室
2018-10
Source PublicationLASER PHYSICS
ISSN1054-660X
Volume28Issue:10
Contribution Rank1
Abstract

The stimulated Raman scattering (SRS) in a multi-kilowatt co-pumping fiber amplifier was investigated. Using 20 m of ytterbium-doped double-cladding fiber in the amplifier stage, an SRS product of 1032.9 nm could be clearly observed when the output laser power was more than 3360 W. By integrating the spectral curve, the ratios of laser power at 1080 nm and SRS to the total output power were 83.95% and 15.17% at the maximum power of 3699 W. In addition, the beam quality began to degenerate abruptly as the four-wave mixing and SRS components appeared. The M-2 factor was measured to be 3.06 at the maximal output power. The mode instability and nonlinear effects might be the main reason for beam quality degradation in high-power fiber amplifier systems.

KeywordStimulated Raman Scattering High Power Fiber Amplifier Beam Quality Master Oscillator Power Amplifier Ytterbium-doped Double-cladding Fiber
DOI10.1088/1555-6611/aad46b
Indexed BySCI ; EI
Language英语
WOS Research AreaMaterials Science ; Physics
WOS IDWOS:000441034300001
PublisherIOP PUBLISHING LTD
EI Accession Number20183505760995
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30560
Collection瞬态光学技术国家重点实验室
Corresponding AuthorZhao, Wei
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Jinkun,Zhao, Wei,Zhao, Baoyin,et al. Investigation of stimulated Raman scattering in high-power co-pumping fiber amplifiers[J]. LASER PHYSICS,2018,28(10).
APA Zheng, Jinkun.,Zhao, Wei.,Zhao, Baoyin.,Li, Zhe.,Li, Gang.,...&Wu, Peng.(2018).Investigation of stimulated Raman scattering in high-power co-pumping fiber amplifiers.LASER PHYSICS,28(10).
MLA Zheng, Jinkun,et al."Investigation of stimulated Raman scattering in high-power co-pumping fiber amplifiers".LASER PHYSICS 28.10(2018).
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