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Proceedings Paper

Creating optical vortex modes with a single cylinder lens
Author(s): Hamsa Sridhar; Martin G. Cohen; John W. Noé
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Paper Abstract

Optical vortex (Laguerre-Gauss) modes can be created by introducing a π/2 phase shift between orthogonal components of Hermite-Gauss (HG) modes. The well-known astigmatic mode converter design described by M.W. Beijersbergen et al. [Optics Communications 96 pgs. 123 132, 1993] achieves this condition by manipulating the differing Gouy phases along orthogonal axes between a matched pair of cylinder lenses. Apparently not well known is that quite useful mode conversions can easily be achieved with a single cylinder lens. We explain the operating principle of such a single lens mode converter, and describe and illustrate how to match the input HG mode to the required Rayleigh range zΗ = fcyl with one additional spherical lens. Setting up and optimizing such a simplified mode converter is an excellent exercise for undergraduate students, and the resulting optical vortex beams can be used for a variety of instructional experiments.

Paper Details

Date Published: 8 February 2010
PDF: 10 pages
Proc. SPIE 7613, Complex Light and Optical Forces IV, 76130X (8 February 2010); doi: 10.1117/12.847890
Show Author Affiliations
Hamsa Sridhar, Stony Brook Univ. (United States)
Martin G. Cohen, Stony Brook Univ. (United States)
John W. Noé, Stony Brook Univ. (United States)

Published in SPIE Proceedings Vol. 7613:
Complex Light and Optical Forces IV
Enrique J. Galvez; David L. Andrews; Jesper Glückstad, Editor(s)

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