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arXiv · 1001.3904

Twin-vortex solitons in nonlocal nonlinear media

Fangwei Ye·Yaroslav V. Kartashov·Bambi Hu·Lluis Torner
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Abstract

We consider soliton formation in thermal nonlinear media bounded by rectangular cross-sections and uncover a new class of nonlinear stationary topological state. Specifically, we find that stationary higher-order vortex states in standard shapes do not exist, but rather they take the form of multiple, spatially separated single-charge singularities nested in an elliptical beam. Double-charge states are found to be remarkably robust despite their shape asymmetry and the phase-singularity splitting. States with higher topological charges are found to be unstable.

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Fangwei Ye, Yaroslav V. Kartashov, Bambi Hu, Lluis Torner. 2010-01-22. Twin-vortex solitons in nonlocal nonlinear media. https://doi.org/10.1364/ol.35.000628

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