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Evolution of composite off-axis vortexes embedded in the propagation-invariant beams

Study of singularities embedded in the propagation-invariant beams has opened up a niche area of research. We report the study of a single and composite off-axis vortexes embedded in the propagation-invariant beams. The influence of radial wavevector of the propagation-invariant beam (host beam) on...

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Bibliographic Details
Published in:Optics communications 2005-03, Vol.247 (1-3), p.1-9
Main Authors: Ahluwalia, B.P.S., Yuan, X.-C., Tao, S.H.
Format: Article
Language:English
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Summary:Study of singularities embedded in the propagation-invariant beams has opened up a niche area of research. We report the study of a single and composite off-axis vortexes embedded in the propagation-invariant beams. The influence of radial wavevector of the propagation-invariant beam (host beam) on the evolution of an off-axis vortex to the centre of the beam (recovery distance) is reported in the paper. The recovery distance of an off-axis vortex also depends on the topological charge of the vortex and the offset distance of the vortex from the centre of the beam. Furthermore, the composite off-axis vortexes stably add their topological charges at the centre of the beam during the free-space propagation.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2004.11.030