Randomized trial reveals stable vortex solitons in nonlocal nonlinear media, suggesting new pathways for optical research.
We reveal that spatially localized vortex solitons become stable in self-focusing nonlinear media when the vortex symmetry-breaking azimuthal instability is eliminated by a nonlocal nonlinear response. We study the main properties of different types of vortex beams and discuss the physical mechanism of the vortex stabilization in spatially nonlocal nonlinear media.
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Yakimenko et al. (2005) studied this question.
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