Optical vortices in beam propagation through a self-defocussing medium
Mcdonald, GS, 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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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.
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|Schools:||Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre|
|Journal or Publication Title:||Optics Communications|
|Depositing User:||GS McDonald|
|Date Deposited:||14 Oct 2011 12:32|
|Last Modified:||14 Oct 2011 12:32|
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