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Proceedings Paper • Open Access

Retrieval of computer-generated holograms projected onto liquid crystal-photoconducting polymer system

Paper Abstract

Simple liquid crystal panel equipped with a polymeric photoconducting layer can be used for displaying dynamic holographic images. It is sufficient to compute the hologram of the object and reconstruct the wavefield optically. This can be done by projection of the binary hologram onto liquid crystal panel with the help of standard video-projector. Illumination of the photoconducting polymeric layer by a white light interferogram leads to tiny molecular rearrangements within the bulk of the liquid crystal layer which form a refractive index grating. They occur as a result of spatially modulated electric space charge field produced in a polymer. Short holographic films displayed at video-rates are achievable with the system based on PVK:TNF polymer and planar nematic liquid crystal mixture. The underlying electrical and optical processes as well as characteristics, performances and limitations of the system are discussed.

Paper Details

Date Published: 18 June 2004
PDF: 10 pages
Proc. SPIE 5351, Organic Photonic Materials and Devices VI, (18 June 2004);
Show Author Affiliations
Andrzej Miniewicz, Wroclaw Univ. of Technology (Poland)
Jaroslaw Mysliwiec, Wroclaw Univ. of Technology (Poland)
Lukasz Gryga, Wroclaw Univ. of Technology (Poland)
Francois Kajzar, CEA Saclay (France)

Published in SPIE Proceedings Vol. 5351:
Organic Photonic Materials and Devices VI
James G. Grote; Toshikuni Kaino, Editor(s)

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