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Full complex Fresnel holograms displayed on liquid cristal displays
Tudela Fernández, Raúl; Martín Badosa, Estela; Labastida i Juan, Ignasi, 1970-; Vallmitjana i Rico, Santiago; Juvells Prades, Ignacio; Carnicer González, Arturo
Universitat de Barcelona
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.
2010-05-04
Òptica
Pantalles de cristall líquid
Holografia
Processament òptic de dades
Optics
Quantum optics and lasers
(c) Institute of Physics Publishing, 2003
Article
Institute of Physics Publishing
         

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