Self-focusing and filamentation of optical vortex beams: spatio-temporal analysis

Georgi Maleshkov; Dragomir N. Neshev; Alexander Dreischuh

doi:10.1117/12.851352

11 November 2009 Self-focusing and filamentation of optical vortex beams: spatio-temporal analysis

Georgi Maleshkov, Dragomir N. Neshev, Alexander Dreischuh

Proceedings Volume 7501, International Conference on Ultrafast and Nonlinear Optics 2009; 75010G (2009) https://doi.org/10.1117/12.851352
Event: Ultrafast Nonlinear Optics 2009, 2009, Bourgas, Bulgaria

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.

Citation Download Citation

Georgi Maleshkov, Dragomir N. Neshev, and Alexander Dreischuh "Self-focusing and filamentation of optical vortex beams: spatio-temporal analysis", Proc. SPIE 7501, International Conference on Ultrafast and Nonlinear Optics 2009, 75010G (11 November 2009); https://doi.org/10.1117/12.851352

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