Transverse modulational instabilities of counterpropagating solitons in photorefractive crystals

被引：39
作者：
Belic, M
Petrovic, M
Jovic, D
Strinic, A
Arsenovic, D
Motzek, K
Kaiser, F
Jander, P
Denz, C
Tlidi, M
Mandel, P
机构：
[1] Inst Phys, YU-11001 Belgrade, Serbia, Serbia
[2] Tech Univ Darmstadt, Inst Appl Phys, D-64289 Darmstadt, Germany
[3] Univ Munster, Inst Appl Phys, D-48149 Munster, Germany
[4] Free Univ Brussels, B-1050 Brussels, Belgium
来源：
OPTICS EXPRESS | 2004年 / 12卷 / 04期
关键词：
Copropagating geometry - Counterpropagating (CP) vector soiltons - Modulational instabilities - Self-trapped optical structures;
D O I：
10.1364/OPEX.12.000708
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study numerically the counterpropagating vector solitons in SBN:60 photorefractive crystals. A simple theory is provided for explaining the symmetry-breaking transverse instability of these solitons. Phase diagram is produced that depicts the transition from stable counterpropagating solitons to bidirectional waveguides to unstable optical structures. Numerical simulations are performed that predict novel dynamical beam structures, such as the standing-wave and rotating multipole vector solitonic clusters. For larger coupling strengths and/or thicker crystals the beams form unstable self-trapped optical structures that have no counterparts in the copropagating geometry. (C) 2004 Optical Society of America.
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收藏
页码：708 / 716
页数：9
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