Resonant frequency doubling of phase-modulation-generated few-frequency fiber laser

被引：11
作者：
Zeng, Xin [1 ,2 ,3 ]
Cui, Shuzhen [1 ,2 ,3 ]
Cheng, Xin [1 ,2 ,3 ]
Zhou, Jiaqi [1 ,2 ]
Qi, Weiao [1 ,2 ,3 ]
Feng, Yan [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[2] Shanghai Key Lab Solid State Laser & Applicat, Shanghai 201800, Peoples R China
[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[4] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China
来源：
OPTICS LETTERS | 2020年 / 45卷 / 17期
关键词：
STIMULATED BRILLOUIN-SCATTERING; SINGLE-FREQUENCY; NARROW-LINEWIDTH; OPTICAL-FIBERS; HIGH-POWER; MODE; NM; LIGHT;
D O I：
10.1364/OL.401348
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Resonant frequency doubling of periodically phase-modulated single-frequency fiber laser is investigated as a method for power scaling of visible fiber lasers. Sinusoidal phase modulation is applied to generate few-frequency lasers at 1064 nm in the proof of principle experiments. By adjusting the modulation frequency to match the free spectral range of a doubling cavity, a resonant enhancement condition can be achieved and a near 30 W 532 nm laser is generated with a maximum conversion efficiency above 80%. The indistinguishable conversion efficiencies between the single-frequency and few-frequency cases prove the feasibility of the approach. Interesting spectral evolvement of the phase-modulated laser in second-harmonic generation is analyzed theoretically and observed in the experiment. (C) 2020 Optical Society of America
引用
收藏
页码：4944 / 4947
页数：4
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