Stable counter-rotating vortex pairs in saturable media

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

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

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 strong-saturation regime, when the soliton's total power exceeds a certain threshold. The dynamical stability is verified in direct simulations of nonlinear model.

Original languageEnglish
Pages (from-to)231-234
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume364
Issue number3-4
DOIs
Publication statusPublished - Apr 30 2007
Externally publishedYes

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counters
solitary waves
vortices
vorticity
self focusing
angular momentum
saturation
composite materials
thresholds
simulation

Keywords

  • Optical angular momentum
  • Optical vortex
  • Phase dislocation
  • Spatial soliton

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Stable counter-rotating vortex pairs in saturable media. / Desyatnikov, Anton S.; Mihalache, Dumitru; Mazilu, Dumitru; Malomed, Boris A.; Lederer, Falk.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 364, No. 3-4, 30.04.2007, p. 231-234.

Research output: Contribution to journalArticle

Desyatnikov, Anton S. ; Mihalache, Dumitru ; Mazilu, Dumitru ; Malomed, Boris A. ; Lederer, Falk. / Stable counter-rotating vortex pairs in saturable media. In: Physics Letters, Section A: General, Atomic and Solid State Physics. 2007 ; Vol. 364, No. 3-4. pp. 231-234.
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