Spatial coherence singularities and incoherent vortex solitons

Kristian Motzek; Yuri S. Kivshar; Ming Feng Shih; Grover A. Swartzlander

doi:10.1364/JOSAB.22.001437

Spatial coherence singularities and incoherent vortex solitons

Kristian Motzek^*, Yuri S. Kivshar, Ming Feng Shih, Grover A. Swartzlander

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

We study spatially localized optical vortices created by self-trapping of partially incoherent light with a phase dislocation in a biased photorefractive crystal. In contrast to a decay of coherent self-trapped vortex beams due to the azimuthal modulational instability, the incoherent vortices are stabilized for large values of the spatial incoherence; this was confirmed by experiment. We analyze the spatial coherence properties of the incoherent optical vortices and reveal the existence of ringlike singularities in the spatial coherence function of a vortex field that can characterize the stable propagation of vortices through nonlinear media.

Original language	English
Pages (from-to)	1437-1442
Number of pages	6
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	22
Issue number	7
DOIs	https://doi.org/10.1364/JOSAB.22.001437
Publication status	Published - Jul 2005

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AU - Motzek, Kristian

AU - Kivshar, Yuri S.

AU - Shih, Ming Feng

AU - Swartzlander, Grover A.

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AB - We study spatially localized optical vortices created by self-trapping of partially incoherent light with a phase dislocation in a biased photorefractive crystal. In contrast to a decay of coherent self-trapped vortex beams due to the azimuthal modulational instability, the incoherent vortices are stabilized for large values of the spatial incoherence; this was confirmed by experiment. We analyze the spatial coherence properties of the incoherent optical vortices and reveal the existence of ringlike 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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JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

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Spatial coherence singularities and incoherent vortex solitons

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