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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 1 — Jan. 2, 2012
  • pp: 364–376

Complete polarization control of light from a liquid crystal spatial light modulator

Ignacio Moreno, Jeffrey A. Davis, Travis M Hernandez, Don M. Cottrell, and David Sand  »View Author Affiliations

Optics Express, Vol. 20, Issue 1, pp. 364-376 (2012)

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We present a method to generate complete arbitrary spatially variant polarization modulation of a light beam by means of a parallel aligned nematic liquid crystal spatial light modulator (SLM). We first analyze the polarization modulation properties in a transmission mode. We encode diffraction gratings onto the SLM and show how to achieve partial polarization control of the zero order transmitted light. We then extend the technique to a double modulation scheme, which is implemented using a single SLM divided in two areas in a reflective configuration. The polarization states of the transmitted beam from the first pass through the first area are rotated using two passes through a quarter wave plate. The beam then passes through the second area of the SLM where additional polarization information can be encoded. By combining previously reported techniques, we can achieve complete amplitude, phase and polarization control for the diffracted light that allows the creation of arbitrary diffractive optical elements including polarization control. Theoretical analysis based on the Jones matrix formalism, as well as excellent experimental results are presented.

© 2011 OSA

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(230.5440) Optical devices : Polarization-selective devices
(070.6120) Fourier optics and signal processing : Spatial light modulators

ToC Category:
Optical Devices

Original Manuscript: November 7, 2011
Revised Manuscript: November 29, 2011
Manuscript Accepted: December 2, 2011
Published: December 21, 2011

Ignacio Moreno, Jeffrey A. Davis, Travis M Hernandez, Don M. Cottrell, and David Sand, "Complete polarization control of light from a liquid crystal spatial light modulator," Opt. Express 20, 364-376 (2012)

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