We analyse the drift of an optical vortex soliton created on a slowly diffracting, finite-extend background field. In the framework of the generalized nonlinear Schrodinger equation we derive the motion equation describing the change of thë vortex velocity induced by local gradients of the phase and intensity of the background field. We present experimental… (More)
The first experimental observation to the authors' knowledge is reported of the generation of optical vortex solitons from instability and breakup of a dark soliton stripe propagating through a saturable self-defocusing nonlinear medium.
Experimental demonstration of the steering of an optical vortex soliton by the superposition of a weak coherent background field is presented. A model to account for vortex motion is derived, and its validity is verified experimentally and numerically.
We present a brief overview of recent experimental and theoretical results on optical vortex solitons (in particular , those recently obtained at the Australian National University). Special attention is paid to a direct comparison between the experimental data on the structure and motion of vortex solitons created as localized structures in a diffracting… (More)
We study the interaction of an optical vortex soliton with a dark-soliton stripe in a bulk nonlinear defocusing medium. We develop a multiscale asymptotic theory to predict the main effect of the interaction and then study it experimentally, observing vortex-induced stripe bending, development of the transverse instability, and stripe breakup.