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Proceedings Paper

Self-focusing and filamentation of optical vortex beams: spatio-temporal analysis
Author(s): Georgi Maleshkov; Dragomir N. Neshev; Alexander Dreischuh
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Paper Abstract

We report numerical simulations supported by experimental observations of self-focusing, fillamentation, and supercontinuum generation by an optical vortex beam in a Kerr nonlinear medium in the regime of dominating nonlinearity. Despite the strong self-focusing resulting in multiple filaments ordered along the vortex ring the optical vortex remains well preserved at the exit of the nonlinear medium and in the far-field. The presented quasi-(3+1)- dimensional numerical simulations under azimuthal initial vortex ring perturbations confirm qualitatively the experimentally observed survival of the optical vortex in the course of the white light generation.

Paper Details

Date Published: 11 November 2009
PDF: 9 pages
Proc. SPIE 7501, International Conference on Ultrafast and Nonlinear Optics 2009, 75010G (11 November 2009); doi: 10.1117/12.851352
Show Author Affiliations
Georgi Maleshkov, Sofia Univ. (Bulgaria)
Dragomir N. Neshev, Australian National Univ. (Australia)
Alexander Dreischuh, Sofia Univ. (Bulgaria)
Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 7501:
International Conference on Ultrafast and Nonlinear Optics 2009
Solomon M. Saltiel; Alexander A. Dreischuh; Ivan P. Christov, Editor(s)

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