Nonlinear beam self-cleaning in a coupled cavity composite laser based on multimode fiber

被引：39
|
作者：
Guenard, R. [1 ]
Krupa, K. [1 ,2 ]
Dupiol, R. [2 ]
Fabert, M. [1 ]
Bendahmane, A. [2 ]
Kermene, V. [1 ]
Desfarges-Berthelemot, A. [1 ]
Auguste, J. L. [1 ]
Tonello, A. [1 ]
Barthelemy, A. [1 ]
Millot, G. [2 ]
Wabnitz, S. [3 ,4 ,5 ]
Couderc, V. [1 ]
机构：
[1] Univ Limoges, XLIM, UMR CNRS 7252, 123 Ave A Thomas, F-87060 Limoges, France
[2] Univ Bourgogne Franche Comte, ICB, UMR CNRS 6303, 9 Ave A Savary, F-21078 Dijon, France
[3] Univ Brescia, Dipartimento Ingn Informaz, Via Branze 38, I-25123 Brescia, Italy
[4] INO CNR, Via Branze 38, I-25123 Brescia, Italy
[5] Novosibirsk State Univ, 1 Pirogova Str, Novosibirsk 630090, Russia
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 19期
基金：
欧盟地平线“2020”;
关键词：
MODE OPERATION; AMPLIFIER;
D O I：
10.1364/OE.25.022219
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study a coupled cavity laser configuration where a passively Q-switched Nd: YAG microchip laser is combined with an extended cavity, including a doped multimode fiber. For appropriate coupling levels with the extended cavity, we observed that beam self-cleaning was induced in the multimode fiber thanks to nonlinear modal coupling, leading to a quasi-single mode laser output. In the regime of beam self-cleaning, laser pulse duration was reduced from 525 to 225 ps. We also observed a Q-switched mode-locked operation, where spatial self-cleaning was accompanied by far-detuned nonlinear frequency conversion in the active multimode fiber. (C) 2017 Optical Society of America
引用
收藏
页码：22219 / 22227
页数：9
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