title: Stabilization and breakup of optical vortices in presence of hybrid nonlinearity.
abstract: We study nonlinear propagation of optical vortices in presence of hybrid nonlinearity as established in a nonconventional biased photorefractive crystal. Our results indicate that under hybrid nonlinearity the breakup of a singly-charged vortex along with the loss of its angular momentum is suppressed considerably as compared with that under conventional self-focusing or self-defocusing nonlinearity. Disintegration of a doubly-charged vortex under hybrid nonlinearity is also presented. Our experimental results are in good agreement with the numerical simulations.
authors.affiliation: The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
authors.forename: Xuetao
authors.initials: X
authors.lastname: Gan
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
authors.forename: Sheng
authors.initials: S
authors.lastname: Liu
authors.forename: Youming
authors.initials: Y
authors.lastname: Zheng
authors.forename: Jianlin
authors.initials: J
authors.lastname: Zhao
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Chen
mesh_terms: D003198:Computer Simulation; D008027:Light; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation