Quasi-stable propagation of vortices and soliton clusters in saturable Kerr media with square-root nonlinearity |
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Authors: | Miroslav M Petroski Milan S Petrovi? Milivoj R Beli? |
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Institution: | a Institute of Physics, P.O. Box 57, 11001 Belgrade, Serbia b High School ?ede Filiposki, 1230 Gostivar, Macedonia c Texas A&M University at Qatar, P.O. Box 5825, Doha, Qatar |
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Abstract: | Analytical and numerical investigation of the propagation of optical beams in Kerr-like saturable photorefractive media is carried out, utilizing a novel model for the local isotropic part of the space-charge field generated in the medium. Using a variational technique, optimal propagation parameters for the most stable propagation of otherwise unstable single Gaussian, single vortex, and optical soliton cluster beams are determined. Analogy between a ring of identical weakly overlapping solitons and a vortex of the same topological charge is explored. |
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Keywords: | 42 65 Tg 42 65 Sf |
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