>5kW Record High Power Narrow Linewidth Laser From Traditional Step-Index Monolithic Fiber Amplifier

被引：55
|
作者：
Huang, Zhi-Meng [1 ]
Shu, Qiang [1 ]
Tao, Ru-Mao [1 ]
Chu, Qiu-Hui [1 ]
Luo, Yun [1 ]
Yan, Dong-Lin [1 ]
Feng, Xi [1 ]
Liu, Yu [1 ]
Wu, Wen-Jie [1 ]
Zhang, Hao-Yu [1 ]
Lin, Hong-Huan [1 ]
Wang, Jian-Jun [1 ]
Jing, Feng [1 ]
机构：
[1] China Acad Engn Phys, Res Ctr Laser Fus, Chengdu 610200, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2021年 / 33卷 / 21期
关键词：
Optical fiber amplifiers; Fiber lasers; Power lasers; Power amplifiers; Laser beams; Power generation; Laser excitation; Optical fiber laser; optical fiber amplifier; narrow linewidth; MODE-INSTABILITY THRESHOLD; RAMAN-SCATTERING;
D O I：
10.1109/LPT.2021.3112270
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：
A high-power monolithic continuous wave (CW) Yb doped fiber amplifier at 1064 nm has been demonstrated based on traditional large mode area step-index fiber, which generated 5.07 kW narrow line-width laser with near diffraction-limited beam quality. At the maximal output power, >35dB OSNR has been achieved with line-width being 370pm, and the measured beam quality is M-x(2) = 1.252, M-y(2) = 1.322. The influence of cooling temperature on SRS has been investigated in high power fiber lasers, which shows that the SRS at 4kW has been suppressed 24 dB by lowering the temperature from 20 degrees C to 8 degrees C. To the best of our knowledge, this is the highest narrow line-width laser power generated from the traditional large mode area step-index monolithic fiber amplifier.
引用
收藏
页码：1181 / 1184
页数：4
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