Eur. Phys. J. D (2012) 66: 308
https://doi.org/10.1140/epjd/e2012-30491-7

Regular Article

Disk-shaped two-dimensional dissipative solitons induced by sticking the beam to the top of annular-lattice potential

¹ Laboratory of Quantum Information Technology, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, P.R. China
² School of Electronics and Information, Guangdong Polytechnic Normal University, Guangzhou 510665, P.R. China

^a e-mail: yinchengping1979@163.com

Received: 7 August 2012
Received in final form: 7 September 2012
Published online: 4 December 2012

Abstract

A new kind of solitons: disk-shaped two-dimensional solitons are found in the cubic-quintic complex Ginzburg-Landau model with an annular lattice potential. The main reason for the occurrence of this kind of solitons is that the viscous force arising from the dissipative system can support an input beam at the surface of the lattice potential. The regions of main parameters for these stable disk-shaped solitons are given by comprehensive simulations. In addition, the relation of the width of the generated disk-shaped solitons to the amplitude of input beam is investigated.