Experimental observations of the threshold-like onset of mode instabilities in high power fiber amplifiers

被引：571

作者：

Eidam, Tino ^{[1
,2
]}

Wirth, Christian ^{[3
]}

Jauregui, Cesar ^{[1
]}

Stutzki, Fabian ^{[1
]}

Jansen, Florian ^{[1
]}

Otto, Hans-Juergen ^{[1
]}

Schmidt, Oliver ^{[3
]}

Schreiber, Thomas ^{[3
]}

Limpert, Jens ^{[1
,2
]}

Tuennermann, Andreas ^{[1
,2
,3
]}

机构：

[1] Univ Jena, Inst Appl Phys, D-07745 Jena, Germany

[2] Helmholtz Inst Jena, D-07743 Jena, Germany

[3] Fraunhofer Inst Appl Opt & Precis Engn, D-07745 Jena, Germany

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 14期

基金：

欧洲研究理事会;

关键词：

HIGH AVERAGE POWER; DOPED FIBERS; BEAM QUALITY; OPERATION; LASERS; GRATINGS; SYSTEM; IMPACT;

D O I：

10.1364/OE.19.013218

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the observation and experimental characterization of a threshold-like onset of mode instabilities, i.e. an apparently random relative power content change of different transverse modes, occurring in originally single-mode high-power fiber amplifiers. Although the physical origin of this effect is not yet fully understood, we discuss possible explanations. Accordingly, several solutions are proposed in this paper to raise the threshold of this effect. (C)2011 Optical Society of America

引用

页码：13218 / 13224

页数：7

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