Kerr beam self-cleaning on the LP11 mode in graded-index multimode fibers

被引：40
|
作者：
Deliancourt, E. [1 ]
Fabert, M. [1 ]
Tonello, A. [1 ]
Krupa, K. [1 ,2 ]
Desfarges-Berthelemot, A. [1 ]
Kermene, V. [1 ]
Millot, G. [3 ]
Barthelemy, A. [1 ]
Wabnitz, S. [2 ,4 ]
Couderc, V. [1 ]
机构：
[1] Univ Limoges, XLIM, UMR CNRS 7252, 123 Ave A Thomas, F-87060 Limoges, France
[2] Univ Brescia, Dip Ingn Informaz, Via Branze 38, I-25123 Brescia, Italy
[3] Univ Bourgogne Franche Comte, ICB, UMR CNRS 6303, 9 Ave A Savary, F-21078 Dijon, France
[4] Sapienza Univ Roma, DIET, Via Eudossiana 18, I-00184 Rome, Italy
来源：
OSA CONTINUUM | 2019年 / 2卷 / 04期
基金：
欧盟地平线“2020”;
关键词：
PROPAGATION; INSTABILITY; PULSE;
D O I：
10.1364/OSAC.2.001089
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the experimental observation of Kerr beam self-cleaning in a graded-index multimode fiber, leading to output beam profiles different from a bell shape, close to the LP01 mode. For specific light injection conditions, nonlinear coupling among the guided modes can reshape the output speckle pattern generated by a pulsed beam into the low order LP11 mode. This effect was observed in a few meters-long multimode fiber with 750 ps pulses at 1064 nm in the normal dispersion regime. The power threshold for LP11 mode self-cleaning was about three times larger than that required for Kerr nonlinear self-cleaning into the LP01 mode. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：1089 / 1096
页数：8
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