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Proceedings Paper

Investigation of photorefractive properties of pure and dye-doped nematic liquid crystals for dynamic holography devices
Author(s): Janusz Parka
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Paper Abstract

I have investigated induced diffraction gratings recorded by light intensity pattern in pure and dye-doped nematic liquid crystals antraquinone dyes (0.1 - 1% w/w), sandwiched between two coating glass plates covered by ITO conductive and polyimide orientation layers (low-angle rubbing, tilt 1.5 - 2°) under dc electric field. In dye- doped nematic liquid crystals high diffraction efficiency approaching 20 % were measured. Fast optical grating formation with times constant ? of 2 ms were observed. The dependence of grating formation on strength of applied dc electric field, cell construction and liquid crystal parameters, configuration of light polarization and nematic director orientation have been reported. These effects are very useful for dynamic holography.

Paper Details

Date Published: 7 March 2006
PDF: 6 pages
Proc. SPIE 4101, Laser Interferometry X: Techniques and Analysis, (7 March 2006); doi: 10.1117/12.498394
Show Author Affiliations
Janusz Parka, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 4101:
Laser Interferometry X: Techniques and Analysis
Gordon M. Brown; Malgorzata Kujawinska; Werner P. O. Jueptner; Ryszard J. Pryputniewicz; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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