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

页码：9569 / 9578

页数：10

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