Vortices and ring dark solitons in nonlinear amplifying waveguides

被引：26

作者：

Zhang, Jie-Fang ^{[1
]}

Wu, Lei ^{[2
]}

Li, Lu ^{[3
]}

Mihalache, Dumitru ^{[4
]}

Malomed, Boris A. ^{[5
]}

机构：

[1] Zhejiang Normal Univ, Inst Nonlinear Phys, Jinhua 321004, Zhejiang, Peoples R China

[2] Zhejiang Forestry Univ, Tianmu Coll, Linan 311300, Peoples R China

[3] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Shanxi, Peoples R China

[4] Horia Hulubei Natl Inst Phys & Nucl Engn, R-077125 Bucharest, Romania

[5] Tel Aviv Univ, Fac Engn, Dept Phys Elect, IL-69978 Tel Aviv, Israel

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 02期

关键词：

PARABOLIC PULSES; PROPAGATION;

D O I：

10.1103/PhysRevA.81.023836

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider the generation and propagation of (2 + 1)-dimensional beams in a nonlinear waveguide with the linear gain. Simple self-similar evolution of the beams is achieved at the asymptotic stage if the input beams represent the fundamental mode. On the contrary, if they carry vorticity or amplitude nodes (or phase slips), vortex tori and ring dark solitons (RDSs) are generated, featuring another type of the self-similar evolution, with an exponentially shrinking vortex core or notch of the RDS. Numerical and analytical considerations reveal that these self-similar structures are robust entities in amplifying waveguides, being stable against azimuthal perturbations.

引用

页数：4

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