Effective angular and wavelength modeling of parallel aligned liquid crystal devices

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/48086
Información del item - Informació de l'item - Item information
Title: Effective angular and wavelength modeling of parallel aligned liquid crystal devices
Authors: Martínez Guardiola, Francisco Javier | Márquez, Andrés | Gallego, Sergi | Francés, Jorge | Pascual, Inmaculada | Beléndez, Augusto
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 devices | Parallel-aligned | Birefringence | Spatial light modulators | Displays
Knowledge Area: Óptica | Física Aplicada
Date Created: 26-Feb-2015
Issue Date: 16-Jun-2015
Publisher: Elsevier
Citation: Optics and Lasers in Engineering. 2015, 74: 114-121. doi:10.1016/j.optlaseng.2015.05.014
Abstract: Parallel aligned liquid crystal (PA-LC) devices are widely used in many optics and photonics applications to control the amplitude, phase and/or state of polarization (SOP) of light beams. Simplified models yet with a good predictive capability are extremely useful in the optimal application of these devices. In this paper we propose and demonstrate the validity of a novel model enabling to calculate the voltage dependent retardance provided by parallel-aligned liquid crystal (PA-LC) devices for a very wide range of incidence angles and any wavelength in the visible. We derive the theoretical expressions, and both experimental and theoretical retardance results are obtained showing a very good agreement. The proposed model is robust and well adapted to a reverse-engineering approach for the calibration of its parameters, whose values are obtained without ambiguities. The model is based on only three physically related magnitudes: two off-state parameters per wavelength and one global voltage dependent parameter, the tilt angle of the LC molecules. To our knowledge it represents the most simplified model available for PA-LC devices yet showing predictive capability. Not only eases the design of experiments dealing with unconventional polarization states or complex amplitude modulation, but it also serves to analyze the physics and dynamics of PA-LC cells since we have estimation for their voltage dependent tilt angle within the device.
Sponsor: Work supported by Ministerio de Trabajo y Competitividad of Spain (projects FIS2011-29803-C02-01 and FIS2011-29803-C02- 02), by Generalitat Valenciana of Spain (projects PROMETEOII/ 2015/015, ISIC/2012/013 and GV/2014/076), and by Universidad de Alicante (project GRE12-14).
URI: http://hdl.handle.net/10045/48086
ISSN: 0143-8166 (Print) | 1873-0302 (Online)
DOI: 10.1016/j.optlaseng.2015.05.014
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2015 Elsevier Ltd.
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.optlaseng.2015.05.014
Appears in Collections:INV - GHPO - Artículos de Revistas

Files in This Item:
Files in This Item:
File Description SizeFormat 
ThumbnailOLEN_v74_pp114-121_2015.pdfVersión final (acceso restringido)2,52 MBAdobe PDFOpen    Request a copy
ThumbnailOLEN-S-15-00157.pdfVersión revisada (acceso abierto)1,03 MBAdobe PDFOpen Preview

Items in RUA are protected by copyright, with all rights reserved, unless otherwise indicated.