Optical vortices in beam propagation through a self-defocussing medium

Mcdonald, GS ORCID: https://orcid.org/0000-0002-1304-5182, Syed, KS and Firth, WJ 1992, 'Optical vortices in beam propagation through a self-defocussing medium' , Optics Communications, 94 (5) , pp. 469-476.

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Abstract

We present numerical simulations and analysis of optical vortex propagation in a 3D self-defocussing medium. On plane wave background initial conditions composed of points and lines of phase discontinuity are shown, in some cases, to evolve towards a regular crystal of fully nonlinear vortices. In other cases the solution more resembles a vortex gas. For gaussian beams, we have derived a simple set of ordinary differential equations which are shown to accurately describe the motion of a single vortex while the background beam undergoes significant spreading.

Item Type:	Article
Themes:	Energy Media, Digital Technology and the Creative Economy Subjects outside of the University Themes
Schools:	Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title:	Optics Communications
Publisher:	Elsevier
Refereed:	Yes
ISSN:	0030-4018
Related URLs:	http://www.sciencedirect.com/science/art...
Depositing User:	GS McDonald
Date Deposited:	14 Oct 2011 11:32
Last Modified:	15 Feb 2022 16:08
URI:	http://usir.salford.ac.uk/id/eprint/18354

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