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Proceedings Paper

Spectral characterization and tuning with liquid-crystal retarders
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Paper Abstract

An accurate characterization of the retardance function of liquid-crystal retarders (LCR) is essential for a proper use of instruments that include these devices. In this paper a simple technique to characterize the retardance of a LCR, both as a function of wavelength and applied voltage, is presented. With the proposed analysis we can describe the spectral modulation properties of the device using few parameters. The method is then extended to the case of non-normal incidence, thus allowing to distinguish between the extraordinary and ordinary axes. The accounting of Fabry-Perot interference effects are used to obtain a very accurate determination of the spectral phase shifts. Finally, such a full characterization of the LCR retardance is applied to a liquid-crystal spatial light modulator and an optical architecture is designed where the spectral content of the light beam can be engineered at will.

Paper Details

Date Published: 9 September 2015
PDF: 11 pages
Proc. SPIE 9598, Optics and Photonics for Information Processing IX, 95980E (9 September 2015); doi: 10.1117/12.2188629
Show Author Affiliations
María del Mar Sánchez-López, Univ. Miguel Hernández de Elche (Spain)
Ignacio Moreno, Univ. Miguel Hernández de Elche (Spain)
Asticio Vargas, Univ. de la Frontera (Chile)
Univ. de Concepción (Chile)
Pascuala García-Martínez, Univ. de València (Spain)

Published in SPIE Proceedings Vol. 9598:
Optics and Photonics for Information Processing IX
Abdul A. S. Awwal; Khan M. Iftekharuddin; Mohammad A. Matin; Mireya García Vázquez; Andrés Márquez, Editor(s)

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