Computational split-field finite-difference time-domain evaluation of simplified tilt-angle models for parallel-aligned liquid-crystal devices

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Title: Computational split-field finite-difference time-domain evaluation of simplified tilt-angle models for parallel-aligned liquid-crystal devices
Authors: Márquez, Andrés | Francés, Jorge | Martínez Guardiola, Francisco Javier | Gallego, Sergi | Alvarez, Mariela L. | Calzado Estepa, Eva María | Pascual, Inmaculada | Beléndez, Augusto
Research Group/s: Holografía y Procesado Óptico | Física de la Materia Condensada
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 | Finite-Difference Time-Domain | Split-Field.
Knowledge Area: Óptica | Física Aplicada
Date Created: 1-Nov-2017
Issue Date: 24-Mar-2018
Publisher: SPIE, The International Society for Optics and Photonics
Citation: Andrés Márquez, Jorge Francés, Francisco J. Martínez, Sergi Gallego, Mariela L. Álvarez, Eva M. Calzado, Inmaculada Pascual, Augusto Beléndez, "Computational split-field finite-difference time-domain evaluation of simplified tilt-angle models for parallel-aligned liquid-crystal devices," Optical Engineering 57(3), 037110 (24 March 2018). https://doi.org/10.1117/1.OE.57.3.037110
Abstract: Simplified analytical models with predictive capability enable simpler and faster optimization of the performance in applications of complex photonic devices. We recently demonstrated the most simplified analytical model still showing predictive capability for parallel aligned liquid crystal on silicon devices (PA-LCoS), which provides the voltage dependent retardance for a very wide range of incidence angles and any wavelength in the visible. In this work we further show that the proposed model is not only phenomenological but it is also physically meaningful, since two of its parameters provide the correct values for important internal properties of these devices related with the birefringence, cell gap and director profile. Therefore, the proposed model can be used as a means to inspect internal physical properties of the cell. Also as a novelty, we also show the applicability of the split-field finite difference time domain (SF-FDTD) technique for phase-shift and retardance evaluation of PA-LCoS devices under oblique incidence. As simplified model for PA-LCoS devices we also consider the exact description of homogeneous birefringent slabs. However, we show that despite its higher degree of simplification the proposed model is more robust, providing unambiguous and physically meaningful solutions when fitting its parameters.
Sponsor: Work supported by Ministerio de Economía, Industria y Competitividad (Spain) (FIS2014-56100-C2-1-P and FIS2015-66570-P) and by Generalitat Valenciana (Spain) (PROMETEO II/2015/015).
URI: http://hdl.handle.net/10045/73908
ISSN: 0091-3286 (Print) | 1560-2303 (Online)
DOI: 10.1117/1.OE.57.3.037110
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: https://doi.org/10.1117/1.OE.57.3.037110
Appears in Collections:INV - GHPO - Artículos de Revistas
INV - Física de la Materia Condensada - Artículos de Revistas

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