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Opt Lett. 2010 Oct 1;35(19):3177-9. doi: 10.1364/OL.35.003177.

Vortex lattice solitons supported by localized gain.

Author information

  • 1Institut de Ciencies Fotoniques, and Universitat Politecnica de Catalunya, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain.

Abstract

We show that localized gain supports the existence of dissipative vortex solitons in periodic Kerr media with strong two-photon absorption. Vortex solitons exist in both focusing and defocusing media, with their propagation constants emerging from semi-infinite or finite gaps in the lattice spectrum. Coincidence of the discrete rotational symmetries of the gain landscape and refractive index distribution is a necessary condition for exciting vortex solitons, which otherwise transform into stable dissipative multipoles.

PMID:
20890325
[PubMed]
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