Suppressing mode instabilities by optimizing the fiber coiling methods

被引：106

作者：

Tao, Rumao ^{[1
,2
]}

Su, Rongtao ^{[1
,2
]}

Ma, Pengfei ^{[1
,2
]}

Wang, Xiaolin ^{[1
,2
]}

Zhou, Pu ^{[1
,2
]}

机构：

[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China

[2] Hunan Prov Collaborat Innovat Ctr High Power Fibe, Changsha 410073, Hunan, Peoples R China

来源：

LASER PHYSICS LETTERS | 2017年 / 14卷 / 02期

基金：

美国国家科学基金会;

关键词：

fiber amplifier; modal instability; coil; thermal effects; OSCILLATOR POWER-AMPLIFIER; NARROW-LINEWIDTH; AVERAGE POWER; LOSS FORMULA; KW; LASER;

D O I：

10.1088/1612-202X/aa4fbf

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Suppressing mode instabilities (MI) by optimizing the fiber coiling methods has been studied numerically. By employing our semi-analytical model, the MI threshold of two typical high power fibers in various coiling methods has been calculated. It reveals that fiber laser systems with gain fibers being coiled in cylinder shape has higher MI threshold than those with gain fibers being coiled in spiral shape, and MI-free output power of fiber lasers can be scaled up to above 3 kW even with the typical commercial fibers in the co-pumped configurations.

引用

页数：7

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