Anamorphic and spatial frequency dependent phase modulation on liquid crystal displays: optimization of the modulation diffraction efficiency

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Title: Anamorphic and spatial frequency dependent phase modulation on liquid crystal displays: optimization of the modulation diffraction efficiency
Authors: Márquez, Andrés | Iemmi, Claudio | Moreno Soriano, Ignacio | Campos Coloma, Juan | Yzuel Giménez, María Josefa
Research Group/s: Holografía y Procesado óptico
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Buenos Aires. Departamento de Física | Universidad Miguel Hernández. Departamento de Ciencia y Tecnología de Materiales | Universidad Autónoma de Barcelona. Departamento de Física
Keywords: Diffractive optics | Liquid-crystal devices | Spatial light modulators | Lens design | Optical data processing
Knowledge Area: Óptica
Date Created: 8-Feb-2005
Issue Date: 21-Mar-2005
Publisher: Optical Society of America
Citation: MÁRQUEZ RUIZ, Andrés, et al. "Anamorphic and spatial frequency dependent phase modulation on liquid crystal displays: optimization of the modulation diffraction efficiency". Optics Express. Vol. 13, No. 6 (21 March 2005). ISSN 1094-4087, pp. 2111-2119
Abstract: In this work we present experimental evidence of an anamorphic and spatial frequency dependent phase modulation in commercially available twisted nematic liquid crystal spatial light modulators. We have found that the phase modulation depth depends on the magnitude of the local spatial frequency component along the horizontal direction. Along the vertical direction the phase modulation depth does not depend on the spatial frequency. This phenomenon is related with the electronics driving the device and in no way related to liquid crystal physics. It causes a reduction of the optical efficiency of a diffractive optical element displayed onto this type of modulator. We present an algorithm to correct this effect and more efficiently display a diffractive optical element. We apply it to the particular case of a Fresnel lens. Experimental results that confirm the improvements in the efficiency of the displayed diffractive lens are presented.
Sponsor: This work was supported by Ministerio de Ciencia y Tecnología, Spain (projects BFM2003-06273-C02-01/FIS and BFM2003-06273-C02-02/FIS). C. Iemmi acknowledges the support of Universidad de Buenos Aires and CONICET (Argentina), and Generalitat de Catalunya, project ACI 2003-42 (Spain).
URI: http://hdl.handle.net/10045/12510
ISSN: 1094-4087
DOI: 10.1364/OPEX.13.002111
Language: eng
Type: info:eu-repo/semantics/article
Rights: This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-6-2111. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Peer Review: si
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