Computational split-field finite-difference time-domain evaluation of simplified tilt-angle models for parallel-aligned liquid-crystal devices
| Autor: | Andrés Márquez, Augusto Beléndez, Jorge Francés, Sergi Gallego, Inmaculada Pascual, Francisco J. Martínez, Eva M. Calzado, Mariela L. Alvarez |
|---|---|
| Přispěvatelé: | 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, Holografía y Procesado Óptico, Física de la Materia Condensada |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Liquid crystal devices
Field (physics) Spatial light modulators Geometry 02 engineering and technology 01 natural sciences 010309 optics 020210 optoelectronics & photonics Displays Liquid crystal Parallel-aligned Física Aplicada 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Óptica Physics Split-Field Birefringence General Engineering Finite-difference time-domain method Finite-Difference Time-Domain Atomic and Molecular Physics and Optics Liquid crystal on silicon Tilt (optics) Liquid-crystal devices Refractive index |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| Popis: | 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. 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). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|