Partially incoherent optical vortices in self-focusing nonlinear media.

Phys Rev Lett 2004 Jan 29;92(4):043904. Epub 2004 Jan 29.

Physics Department, National Taiwan University, Taipei 106, Taiwan.

We observe stable propagation of spatially localized single- and double-charge optical vortices in a self-focusing nonlinear medium. The vortices are created by self-trapping of partially incoherent light carrying a phase dislocation, and they are stabilized when the spatial incoherence of light exceeds a certain threshold. We confirm the vortex stabilization effect by numerical simulations and also show that the similar mechanism of stabilization applies to higher-order vortices.

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http://dx.doi.org/10.1103/PhysRevLett.92.043904DOI Listing
January 2004
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