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Proceedings Paper

Gaussian beam beyond a paraxial barrier
Author(s): Tatyana A. Fadeyeva; Vladlen G. Shvedov; Alexander V. Volyar
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Paper Abstract

The singular structure of Gaussian beam are discussed. It is found out that the Gaussian beam may be represented as set of straight lines placed on a hyperbolic surface. It is shown that a wave front of this beam is a function of a point source, but the distance of from the origin point to the wave front surface is a complex magnitude. An argument of this complex function is a beam topological phase which characterizes a wave front rotation. Singularities manifold placed at the beam focal plane is ring edge dislocations. Dislocation reaction processes are begun if only there is a diffractive wave resulted a scattering at a phase or opaque obstacle.

Paper Details

Date Published: 18 November 1999
PDF: 7 pages
Proc. SPIE 3904, Fourth International Conference on Correlation Optics, (18 November 1999); doi: 10.1117/12.370465
Show Author Affiliations
Tatyana A. Fadeyeva, Simferopol State Univ. (Ukraine)
Vladlen G. Shvedov, Simferopol State Univ. (Ukraine)
Alexander V. Volyar, Simferopol State Univ. (Ukraine)

Published in SPIE Proceedings Vol. 3904:
Fourth International Conference on Correlation Optics
Oleg V. Angelsky, Editor(s)

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