Stable dissipative optical vortex clusters by inhomogeneous effective diffusion
| Autor: | Dumitru Mihalache, Shiquan Lai, Yingji He, Huishan Li, Jianing Xie, Xing Zhu, Yunli Qui |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Oscillation Winding number 01 natural sciences Atomic and Molecular Physics and Optics Vortex 010309 optics Optics Condensed Matter::Superconductivity 0103 physical sciences Dissipative system Diffusion (business) 010306 general physics business Optical vortex Beam (structure) Topological quantum number |
| Zdroj: | Optics Express. 25:27948 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.25.027948 |
| Popis: | We numerically show the generation of robust vortex clusters embedded in a two-dimensional beam propagating in a dissipative medium described by the generic cubic-quintic complex Ginzburg-Landau equation with an inhomogeneous effective diffusion term, which is asymmetrical in the two transverse directions and periodically modulated in the longitudinal direction. We show the generation of stable optical vortex clusters for different values of the winding number (topological charge) of the input optical beam. We have found that the number of individual vortex solitons that form the robust vortex cluster is equal to the winding number of the input beam. We have obtained the relationships between the amplitudes and oscillation periods of the inhomogeneous effective diffusion and the cubic gain and diffusion (viscosity) parameters, which depict the regions of existence and stability of vortex clusters. The obtained results offer a method to form robust vortex clusters embedded in two-dimensional optical beams, and we envisage potential applications in the area of structured light. |
| Databáze: | OpenAIRE |
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