Formation of a quadrupole vortex and a second-order optical vortex in caustics upon focusing of light by a two-component crystal-optics ... View Full Text


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Article Info

DATE

2009-09

AUTHORS

V. Yu. Osipov, A. A. Buznikov

ABSTRACT

A wave field of a structurally stable diffraction caustic that is formed upon focusing of a collimated laser beam with the help of a two-component crystal-optics element consisting of uniaxial crystals is characterized by a crystal-like cellular structure. Near the cusp of this caustic (diffraction catastrophe), a well-pronounced localized quadrupole optical vortex is observed that consists of four isolated vortices with pairwise opposite topological charges of −1, +1, +1, and −1. The creation and annihilation points of this combined quadrupole vortex are determined. Upon reversal of the direction of propagation of the laser beam through the crystal-optics element, the caustic in the focal region has already become a binary combination and inhomogeneously polarized, and a second-order optical vortex is observed near the cusp of this caustic. More... »

PAGES

417

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0030400x09090185

DOI

http://dx.doi.org/10.1134/s0030400x09090185

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1001052474


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