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Title: Full complex Fresnel holograms displayed on liquid cristal displays
Author: Tudela Fernández, Raúl
Martín Badosa, Estela
Labastida i Juan, Ignasi, 1970-
Vallmitjana i Rico, Santiago
Juvells Prades, Ignacio
Carnicer González, Arturo
Keywords: Òptica
Pantalles de cristall líquid
Processament òptic de dades
Quantum optics and lasers
Issue Date: 2003
Publisher: Institute of Physics Publishing
Abstract: We propose a method to display full complex Fresnel holograms by adding the information displayed on two analogue ferroelectric liquid crystal spatial light modulators. One of them works in real-only configuration and the other in imaginary-only mode. The Fresnel holograms are computed by backpropagating an object at a selected distance with the Fresnel transform. Then, displaying the real and imaginary parts on each panel, the object is reconstructed at that distance from the modulators by simple propagation of light. We present simulation results taking into account the specifications of the modulators as well as optical results. We have also studied the quality of reconstructions using only real, imaginary, amplitude or phase information. Although the real and imaginary reconstructions look acceptable for certain distances, full complex reconstruction is always better and is required when arbitrary distances are used.
Note: Versió postprint del document publicat a
It is part of: Journal of Optics A: Pure and Applied Optics, 2003, vol. 5, p. 189-194
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ISSN: 2040-8978
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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