Spiral-like singular beams in gyrotropic crystals

A. Rubass; T. Fadeyeva; Yu. Egorov; V. Shvedov; A. Volyar; A. Desyatnikov; Yu. Kivshar

doi:10.1117/12.679914

14 June 2006 Spiral-like singular beams in gyrotropic crystals

A. Rubass, T. Fadeyeva, Yu. Egorov, V. Shvedov, A. Volyar, A. Desyatnikov, Yu. Kivshar

Proceedings Volume 6254, Seventh International Conference on Correlation Optics; 62540H (2006) https://doi.org/10.1117/12.679914
Event: Seventh International Conference on Correlation Optics, 2005, Chernivsti, Ukraine

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 investigations^2,3. 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 holograms^6'7 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.

Citation Download Citation

A. Rubass, T. Fadeyeva, Yu. Egorov, V. Shvedov, A. Volyar, A. Desyatnikov, and Yu. Kivshar "Spiral-like singular beams in gyrotropic crystals", Proc. SPIE 6254, Seventh International Conference on Correlation Optics, 62540H (14 June 2006); https://doi.org/10.1117/12.679914

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