Jeng, Chien ChungShih, MIng-FengMotzek, ChristianKivshar, Yuri2015-12-132015-12-130031-9007http://hdl.handle.net/1885/78339The stable propagation of spatially localized optical vortices in self-focusing nonlinear media was investigated. The optical vortices were created by partially incoherent light beams which propagated in a photorefractive nonlinear medium and carried a phase dislocation. The single-charge and double-charge optical vortices were stabilized in self-focusing nonlinear media when the value of the spatial incoherence of light exceeded a certain threshold. The results show that the vortex stabilization was confirmed by numerical simulations and was also applied to higher-order vortices.Keywords: Charge coupled devices; Coherent light; Computer simulation; Diffusers (optical); Electromagnetic wave diffraction; Electromagnetic wave propagation; Holograms; Lighting; Optical Kerr effect; Photorefractive materials; Refractive index; Solitons; Vortex f20042015-12-11