Analysis of optical vortex beams with integer and fractional topological charge

Valeriy A. Pas'ko; I. V. Basistiy; Mikhail V. Vasnetsov; Marat S. Soskin

doi:10.1117/12.558807

4 June 2004 Analysis of optical vortex beams with integer and fractional topological charge

Valeriy A. Pas'ko, I. V. Basistiy, Mikhail V. Vasnetsov, Marat S. Soskin

Proceedings Volume 5477, Sixth International Conference on Correlation Optics; (2004) https://doi.org/10.1117/12.558807
Event: Sixth International Conference on Correlation Optics, 2003, Chernivsti, Ukraine

Abstract

This work presents an analysis of optical vortex beams with integer and fractional topological charges, produced by binary computer-generated holograms. In the case of integer topological charge, diffraction of a Gaussian beam by the hologram creates an optical vortex beam with amplitude distribution, which can be described in the far field by the Kummer function. We introduced for such beams the name “Kummer beams”. An analysis of the optical vortex beam with 1/2 fractional topological charge shows that it can be represented in the far field as a superposition of a vortex-free wave and single-charged anisotropic optical vortex.

Citation Download Citation

Valeriy A. Pas'ko, I. V. Basistiy, Mikhail V. Vasnetsov, and Marat S. Soskin "Analysis of optical vortex beams with integer and fractional topological charge", Proc. SPIE 5477, Sixth International Conference on Correlation Optics, (4 June 2004); https://doi.org/10.1117/12.558807

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