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Proceedings Paper

Analysis of polarization vortices generated from a polarization diffractive mask
Author(s): Ignacio Moreno; Claudio Iemmi; Juan Campos; María J. Yzuel; Asticio Vargas
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Paper Abstract

In this work we analyze the diffraction pattern generated by a four quadrant polarization mask. Different quadrants transmit different linear polarizations. We show that the diffraction pattern, in the absence of analyzer, shows the intensity distribution characteristic from a square aperture, but the state of polarization is not uniform. In particular, we demonstrate that an array of singular points (polarization vortices) is being generated. When an analyzer is placed behind the polarization diffractive mask, the intensity of the diffracted field is changed as the analyzer rotates. Experimental verification is performed with a twisted nematic liquid crystal display.

Paper Details

Date Published: 25 April 2008
PDF: 12 pages
Proc. SPIE 7000, Optical and Digital Image Processing, 700017 (25 April 2008); doi: 10.1117/12.783606
Show Author Affiliations
Ignacio Moreno, Univ. Miguel Hernández de Elche (Spain)
Claudio Iemmi, Univ. Buenos Aires (Argentina)
Juan Campos, Univ. Autónoma de Barcelona (Spain)
María J. Yzuel, Univ. Autónoma de Barcelona (Spain)
Asticio Vargas, Univ. de La Frontera (Chile)


Published in SPIE Proceedings Vol. 7000:
Optical and Digital Image Processing
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal; Frédéric Truchetet, Editor(s)

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