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Proceedings Paper

Complete Stokes polarimeters based on liquid crystal displays
Author(s): Alba Peinado; Angel Lizana; Josep Vidal; Claudio Iemmi; Juan Campos
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Paper Abstract

In this work, we present the design, optimization and experimental implementation of complete Stokes polarimeters based on parallel aligned and twisted nematic liquid crystal displays. The liquid crystal elements are used as variable retarders whose retardance depends on the addressed voltage. By including this type of anisotropic devices in the polarimeter design we obtain some benefits when compared to mechanical polarimeters. For example, they allow to avoid the corresponding uncertainty due to mechanical movement. In addition, among the different polarimeter configurations provided by the polarimeter design, we have also applied an optimization procedure based on the minimization of different mathematical indicators (as the condition number or the equally weighted variance) in order to minimize the error amplification from the radiometric measurements to the solution. Finally, the optimized polarimeters are experimentally implemented and tested. In the implementation process, the eigenvalues method (a rigorous calibration procedure) is used.

Paper Details

Date Published: 7 September 2010
PDF: 12 pages
Proc. SPIE 7797, Optics and Photonics for Information Processing IV, 77970V (7 September 2010); doi: 10.1117/12.860854
Show Author Affiliations
Alba Peinado, Univ. Autònoma de Barcelona (Spain)
Angel Lizana, Univ. Autònoma de Barcelona (Spain)
Josep Vidal, Univ. Autònoma de Barcelona (Spain)
ALBA-Synchrotron Light Facility (Spain)
Claudio Iemmi, Univ. de Buenos Aires (Argentina)
Juan Campos, Univ. Autònoma de Barcelona (Spain)

Published in SPIE Proceedings Vol. 7797:
Optics and Photonics for Information Processing IV
Abdul Ahad Sami Awwal; Khan M. Iftekharuddin; Scott C. Burkhart, Editor(s)

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