Article

Partially Incoherent Optical Vortices in Self-Focusing Nonlinear Media

Technical University Darmstadt, Darmstadt, Hesse, Germany
Physical Review Letters (Impact Factor: 7.73). 02/2004; 92(4):043904. DOI: 10.1103/PhysRevLett.92.043904
Source: PubMed

ABSTRACT 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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