High-power thermally guiding index-antiguiding-core fibers

被引：23

作者：

Jansen, Florian ^{[1
]}

Stutzki, Fabian ^{[1
]}

Otto, Hans-Juergen ^{[1
]}

Jauregui, Cesar ^{[1
]}

Limpert, Jens ^{[1
,2
]}

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

机构：

[1] Univ Jena, Abbe Ctr Photon, 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 LETTERS | 2013年 / 38卷 / 04期

基金：

欧洲研究理事会;

关键词：

MODE-INSTABILITIES; SINGLE-MODE; AMPLIFIER; LASERS; ORIGIN;

D O I：

10.1364/OL.38.000510

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate high-power operation of a very-large-mode-area (VLMA) fiber concept based on an index-antiguiding, thermally guiding core in which an ytterbium-doped region is completely surrounded by silica with a slightly higher refractive index. Experimentally, regimes of antiguidance, single-mode operation, and mode instabilities predominantly with radially symmetric higher-order modes are observed. Fundamental limitations for conventional VLMA step-index fibers are discussed. (C) 2013 Optical Society of America

引用

页码：510 / 512

页数：3

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