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Proceedings Paper

Spiral-like singular beams in gyrotropic crystals
Author(s): A. Rubass; T. Fadeyeva; Yu. Egorov; V. Shvedov; A. Volyar; A. Desyatnikov; Yu. Kivshar
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Paper Abstract

Recent developments in solving a paraxial wave equation1 open new perspectives in theoretical analysis of different types of singular beams stimulating in turn a great series of experimental investigations2,3. In particular, authors of Ref.4 propose to use pure phase masks for creating a structurally stable helico-conical singular beam with spiral-like intensity distribution. On the other hand, artificial phase masks need a great precision in their manufacturing connected with a large industrial outlay. Because of a great interest is to use natural objects for generating singularities in beams. Such objects are anisotropic crystals. As is well-known, uniaxial and biaxial crystals serve as basic elements for generating optical vortices nested in different types of singular beams5. The most amazing feature of the crystal is ability to create stable polychromatic vortices with high energy effectiveness. In contrast to the method of computer-generated holograms6'7 the crystal forms a white vortex-bearing beam without any additional gadgets. The aim of the present article is to consider one more way permitting to generate singular beams bearing spiral edge dislocations and optical vortices with the help of two gyrotropic crystals.

Paper Details

Date Published: 14 June 2006
PDF: 8 pages
Proc. SPIE 6254, Seventh International Conference on Correlation Optics, 62540H (14 June 2006); doi: 10.1117/12.679914
Show Author Affiliations
A. Rubass, Taurida National Univ. (Ukraine)
T. Fadeyeva, Taurida National Univ. (Ukraine)
Yu. Egorov, Taurida National Univ. (Ukraine)
V. Shvedov, Taurida National Univ. (Ukraine)
A. Volyar, Taurida National Univ. (Ukraine)
A. Desyatnikov, Australian National Univ. (Australia)
Yu. Kivshar, Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 6254:
Seventh International Conference on Correlation Optics
Oleg V. Angelsky, Editor(s)

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