Spatial coherence singularities and incoherent vortex solitons

Details Spatial coherence singularities and incoherent vortex solitons Spatial coherence singularities and incoherent vortex solitons

2004-10-24

arxiv.org/abs/nlin/0410051v1

Nonlinear Sciences

Pattern Formation and Solitons

10 pages, 5 figures

Scientific paper

10.1364/JOSAB.22.001437

We study spatially localized optical vortices created by self-trapping of partially incoherent light with a phase dislocation in a biased photorefractive crystal. In a contrast to the decay of coherent self-trapped vortex beams due to the azimuthal instability, the incoherent vortices are stabilized when the spatial incoherence of light exceeds a certain threshold. We analyze the spatial coherence properties of the incoherent optical vortices and reveal the existence of ring-like singularities in the spatial coherence function of a vortex field that can characterize the stable propagation of vortices through nonlinear media.

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