High average power large-pitch fiber amplifier with robust single-mode operation

被引：157
|
作者：
Stutzki, Fabian [1 ]
Jansen, Florian [1 ]
Eidam, Tino [1 ,2 ]
Steinmetz, Alexander [1 ]
Jauregui, Cesar [1 ]
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 LETTERS | 2011年 / 36卷 / 05期
基金：
欧洲研究理事会;
关键词：
BEAM QUALITY; AREA;
D O I：
10.1364/OL.36.000689
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ytterbium-doped large-pitch fibers with very large mode areas are investigated in a high-power fiber amplifier configuration. An average output power of 294W is demonstrated, while maintaining robust single-mode operation with a mode field diameter of 62 mu m. Compared to previous active large-mode area designs, the threshold of mode instabilities is increased by a factor of about 3. (C) 2011 Optical Society of America
引用
收藏
页码：689 / 691
页数：3
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