Study of the modulation capabilities of parallel aligned liquid crystal on silicon displays
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Title: | Study of the modulation capabilities of parallel aligned liquid crystal on silicon displays |
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Authors: | Márquez, Andrés | Martínez Guardiola, Francisco Javier | Gallego, Sergi | Ortuño, Manuel | Francés, Jorge | Beléndez, Augusto | Pascual, Inmaculada |
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 Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías |
Keywords: | Liquid crystal on silicon displays | Parallel aligned | Retardance measurement | Phase-only modulation | Spatial light modulation | Flicker | Diffractive optics |
Knowledge Area: | Óptica | Física Aplicada |
Date Created: | Jul-2013 |
Issue Date: | 26-Sep-2013 |
Publisher: | SPIE, The International Society for Optics and Photonics |
Citation: | A. Márquez ; F. J. Martínez ; S. Gallego ; M. Ortuño ; J. Francés ; A. Beléndez and I. Pascual "Study of the modulation capabilities of parallel aligned liquid crystal on silicon displays ", Proc. SPIE 8855, Optics and Photonics for Information Processing VII, 885504 (September 26, 2013); doi:10.1117/12.2023266; http://dx.doi.org/10.1117/12.2023266 |
Abstract: | Among the existent technologies of spatial light modulator devices, parallel aligned liquid crystal on silicon displays (PA-LCoS) have found wide acceptance. They are especially interesting since they provide phase-only modulation with no coupling of amplitude modulation. Optimal use of these devices requires proper calibration of their modulation capabilities in order to minimize some degradation effects found in the literature, such as flicker or anamorphic and frequency dependent modulation. In this work we apply calibration techniques developed in our lab, basically the classical linear polarimeter adapted to be able to take into account the existence of flicker. This method enables to obtain both the average retardance and a good estimation of the magnitude of the phase fluctuation when flicker is present. Various addressing formats are discussed and variations in the magnitude of the applied voltages are considered in order to amplify the retardance dynamic range and to enhance linearity in the device. Finally, two electrical configurations intended for phase-only and amplitude-mostly modulation regimes, useful e.g. in diffractive optics, are given. |
Sponsor: | This work was supported by the Ministerio de Trabajo y Competitividad of Spain under projects FIS2011-29803-C02-01 and FIS2011-29803-C02-02 and by the Generalitat Valenciana of Spain (projects PROMETEO/2011/021 and ISIC/2012/013). |
URI: | http://hdl.handle.net/10045/33566 |
ISBN: | 978-0-81949-705-5 |
ISSN: | 0277-786X |
DOI: | 10.1117/12.2023266 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | Copyright 2013 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, vol. 8855, and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1117/12.2023266 |
Appears in Collections: | INV - GHPO - Comunicaciones a Congresos, Conferencias, etc. INV - GHPO - Artículos de Revistas |
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File | Description | Size | Format | |
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SPIE_v8855_art885504_2013.pdf | 518,41 kB | Adobe PDF | Open Preview | |
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