Dissipative Vortex Solitons in Defocusing Media with Spatially Inhomogeneous Nonlinear Absorption

被引：0

作者：

来娴静 ^{[1
]}

蔡晓鸥 ^{[1
]}

张解放 ^{[2
]}

机构：

[1] College of Basic Science Zhejiang Shuren University

[2] Zhejiang University of Media and Communications

来源：

Communications in Theoretical Physics | 2018年 / 69卷 / 02期

基金：

中国国家自然科学基金;

关键词：

vortex; dissipative soltitons; nonlinear loss;

D O I：

暂无

中图分类号：

O415 [非线性物理学];

学科分类号：

070201 ;

摘要：

In this paper, by solving a complex nonlinear Schr¨odinger equation, radially symmetric dissipative vortex solitons are obtained analytically and are tested numerically. We find that spatially inhomogeneous nonlinear absorption gives rise to the stability of dissipative vortex solitons in self-defocusing nonlinear medium in the presence of constant linear gain. Numerical simulation reveals the interaction effect among linear gain and nonlinear loss in the azimuthal modulation instabilities of these vortices suppression. Apart from the uniform linear gain indeed affects the stability of vortex in this media, another noticeable feature of current setup is that the steep spatial modulation of the nonlinear absorption can suppress sidelobes effectively and support stable vortex solitons in situations with uniform linear gain.Under appropriate conditions, the vortex solitons can propagate stably and feature no symmetry breaking, although the beams exhibit radical compression and amplification as they propagate.

引用

页码：159 / 165

页数：7