Impact of imbalancing in the self-splitting of beams with nested vortices into solitons in quadratic nonlinear crystals
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We address the existence and instability of bright vortex solitary waves in quadratic non-linear media under conditions for Type II second-harmonic generation and study in detail the effects introduced by the presence of power imbalancing at the fundamental frequency. We find the families of solitary-wave solutions with different combinations of topological charges of the nested vortices and show their spontaneous azimuthal instability. The growth rates of the azimuthal perturbations are calculated as a function of the imbalancing. Experimental consequences are stressed and discussed.
CitationMolina, G., Juan P. Torres, Torner, L., Soto-Crespo, J. Impact of imbalancing in the self-splitting of beams with nested vortices into solitons in quadratic nonlinear crystals. "Optics communications", Desembre 1998, vol. 158, núm. 6, p. 170-180.
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