Analysis of polarization vortices generated from a polarization diffractive mask

Ignacio Moreno; Claudio Iemmi; Juan Campos; María J. Yzuel; Asticio Vargas

doi:10.1117/12.783606

25 April 2008 Analysis of polarization vortices generated from a polarization diffractive mask

Ignacio Moreno, Claudio Iemmi, Juan Campos, María J. Yzuel, Asticio Vargas

Proceedings Volume 7000, Optical and Digital Image Processing; 700017 (2008) https://doi.org/10.1117/12.783606
Event: SPIE Photonics Europe, 2008, Strasbourg, France

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.

Citation Download Citation

Ignacio Moreno, Claudio Iemmi, Juan Campos, María J. Yzuel, and Asticio Vargas "Analysis of polarization vortices generated from a polarization diffractive mask", Proc. SPIE 7000, Optical and Digital Image Processing, 700017 (25 April 2008); https://doi.org/10.1117/12.783606

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