Dynamics of electromagnetic beam with phase dislocation in saturable nonlinear media

Škarka, Vladimir; Aleksić, Najdan N.B.; Berezhiani, VAZHA

doi:doi/10.1016/S0375-9601(01)00665-X

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Dynamics of electromagnetic beam with phase dislocation in saturable nonlinear media

par Škarka, Vladimir ;Aleksić, Najdan N.B.;Berezhiani, VAZHA

Référence Physics letters. A, 291, 2-3, page (124-132)
Publication Publié, 2001-12

Article révisé par les pairs

Résumé :

The nonlinear dynamics of laser beams carrying phase singularity in media with cubic-quintic nonlinearity is studied. In such media can be generated not only localized vortex solitons but also a novel kind of stable nonlocalized optical vortices. Stability in the defocusing regime is confirmed numerically. In the focusing regime such a vortex breaks into filaments. Dynamics of a singular Gaussian beam is investigated. Numerical simulations show a new behavior of the supercritical Gaussian beam which first breaks into filaments coalescing after. © 2001 Elsevier Science B.V. All rights reserved.

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