Space-time adaptive control of femtosecond pulses amplified in a multimode fiber

被引：4
|
作者：
Florentin, Raphael [1 ]
Kermene, Vincent [1 ]
Desfarges-Berthelemot, Agnes [1 ]
Barthelemy, Alain [1 ]
机构：
[1] Univ Limoges, CNRS, XLIM, UMR 7252, 123 Ave A Thomas, F-87060 Limoges, France
来源：
OPTICS EXPRESS | 2018年 / 26卷 / 08期
关键词：
TRANSFER-MATRIX INVERSION; PRINCIPAL MODES; SCATTERING MEDIA; LIGHT;
D O I：
10.1364/OE.26.010682
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ultrashort light pulse transport and amplification in a 1.3 m long step-index multimode fiber with gain and with weak coupling has been investigated. An adaptive shaping of the input wavefront, only based on the output intensity pattern, has led to an amplified pulse focused both in space (1/32) and in time (1/10) despite a strong modal group delay dispersion. Optimization of the input owing to the two-photon detection of the amplified signal permitted to excite the fastest and more intense principal mode of the fiber and to get an output pulse duration limited by group velocity dispersion. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：10682 / 10690
页数：9
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