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Proceedings Paper

Multiple-charged optical vortex solitons: existence and stability in saturable Kerr-type nonlinear media
Author(s): Aleksander A. Dreischuh; G. G. Paulus; Dragomir Neshev; F. Grasbon; Herbert Walther
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Paper Abstract

Multiple-charged optical vortex solitons (OVSs) are generated in a thermal nonlinear medium with saturation. The respective soliton constants are found to be linearly proportional to the topological charges. The linear stability analysis and the numerical simulations indicate a rich variety of instability scenaria depending on the type of perturbation. The saturation of the nonlinearity is shown to be able to slow down the decay of multiple charged dark beams at an intermediate evolution stage and to prevent their ultimate decay into charge-one OVSs. This concept is experimentally verified by the experimental observation of a partial decay of a triple- charged optical vortex beam.

Paper Details

Date Published: 9 April 2001
PDF: 5 pages
Proc. SPIE 4397, 11th International School on Quantum Electronics: Laser Physics and Applications, (9 April 2001); doi: 10.1117/12.425132
Show Author Affiliations
Aleksander A. Dreischuh, Univ. of Sofia (Bulgaria)
G. G. Paulus, Max-Planck-Institut fuer Quantenoptik (Germany)
Dragomir Neshev, Univ. of Sofia (Bulgaria)
F. Grasbon, Max-Planck-Institut fuer Quantenoptik (Germany)
Herbert Walther, Max-Planck-Institut fuer Quantenoptik and Ludwig-Maximillians-Univ. (Germany)


Published in SPIE Proceedings Vol. 4397:
11th International School on Quantum Electronics: Laser Physics and Applications
Peter A. Atanasov; Stefka Cartaleva, Editor(s)

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