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Stable counter-rotating vortex pairs in saturable media

Desyatnikov, Anton S; Mihalache, Dumitru; Mazilu, Dumitru; Malomed, Boris A; Lederer, Falk


We resolve a controversial issue of the stability of composite vortex solitons in self-focusing saturable nonlinear media. Stable vortex solitons with hidden angular momentum, i.e., composed of counter-rotating beams with topological charges +1 and -1, are found, and their linear-stability region is identified. In contrast, the solitons with explicit vorticity are always unstable against splitting. The predicted linear stability of the hidden-vorticity solitons is achieved in the...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Physics Letters A
DOI: 10.1016/j.physleta.2006.11.090


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