Stimulated Brillouin scattering suppression of thulium-doped fiber amplifier with fiber superfluorescent seed source

被引：18
|
作者：
Liu, Chen [1 ]
Liu, Jiang [1 ]
Zhang, Yijing [1 ]
Hou, Yubin [1 ]
Qi, Shuxian [1 ]
Feng, Xian [1 ]
Wang, Pu [1 ]
机构：
[1] Beijing Univ Technol, Inst Laser Engn, Beijing Engn Res Ctr Laser Appl Technol, 100 Pingleyuan, Beijing 100124, Peoples R China
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 09期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
HIGH-AVERAGE-POWER; GRADIENT DESCENT ALGORITHM; COHERENT BEAM COMBINATION; SINGLE-FREQUENCY; NARROW-LINEWIDTH; SBS-THRESHOLD; OUTPUT POWER; LASERS; KW; BAND;
D O I：
10.1364/OE.25.009569
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate the stimulated Brillouin scattering (SBS) effect in high-power thulium-doped fiber amplifier seeded with a narrow-linewidth fiber superfluorescent source or a conventional narrow-linewidth fiber laser. No random backward SBS pulses are observed when using a narrow-linewidth fiber superfluorescent source as the seed. The corresponding average power and peak power reach 153 W and 3.4 kW, respectively, only limited by the available pump power. This gives the average power and peak power extraction from the thulium-doped fiber amplifier with 17 fold enhancement, in comparison with the situation using the conventional narrow-linewidth fiber laser with similar central wavelength and spectral linewidth as the seed. This work indicates that using low coherent fiber superfluorescent sources is a good solution for power scaling in narrow-linewidth fiber amplifier system in order to overcome the limitation of SBS effect. (C) 2017 Optical Society of America
引用
收藏
页码：9569 / 9578
页数：10
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