摘要
In this paper,by solving a complex nonlinear Schr6dinger 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 vortex in this media,another noticeable feature of current setup the uniform linear gain indeed affects the stability of 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.
作者
Xian-Jing Lai
Xiao-Ou Cai
Jie-Fang Zhang
来娴静;蔡晓鸥;张解放(College of Basic Science Zhejiang Shuren University,Hangzhou 310015,China;Zhejiang University of Media and Communications,Hangzhou 310018,China)
基金
Supported by the National Natural Science Foundation of China under Grant No.11705164
the Zhejiang Provincial Natural Science Foundation of China under Grant No.LQ16A040003
作者简介
Xian-Jing Lai,E-mail:laixianjing@l63.com
