Spatial-spectral vortex solitons in quadratic lattices

被引：2
|
作者：
Xu, Zhiyong [1 ]
Sukhorukov, Andrey A. [1 ]
机构：
[1] Australian Natl Univ, Ctr Ultra High Bandwidth Devices Opt Syst CUDOS, Nonlinear Phys Ctr, Res Sch Phys & Engn, Canberra, ACT 0200, Australia
来源：
OPTICS LETTERS | 2009年 / 34卷 / 08期
基金：
澳大利亚研究理事会;
关键词：
DISCRETE; SYSTEMS;
D O I：
10.1364/OL.34.001168
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We predict the existence of spatial-spectral vortex solitons in one-dimensional periodic waveguide arrays with quadratic nonlinear response. In such vortices the energy flow forms a closed loop through the simultaneous effects of phase gradients at the fundamental frequency and second-harmonic fields and the parametric frequency conversion between the spectral components. The linear stability analysis shows that such modes are stable in a broad parameter region. (C) 2009 Optical Society of America
引用
收藏
页码：1168 / 1170
页数：3
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