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Proceedings Paper

Photorefractive effects in ferroelectric liquid crystals
Author(s): M. Talarico; D. Pucci; M. Ghedini; R. Termine; A. Golemme
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Paper Abstract

The photorefractive properties of SmC* phases are usually studied in samples which are not intrinsically photoconductive and in which light sensitization is achieved by doping. We propose two different approaches: the first one is the use of a liquid crystal which is intrinsically photoconducting and photorefractive without any doping. In this system a PR performance larger than what previously reported for doped systems was measured, as well as the amplitude of the photoinduced space-charge field. A further development of this research is the control of the polarization switching in a bistable surface-stabilized ferroelectric liquid crystal (SSFLC) device via a photorefractive (PR) mechanism. In this case, the space-charge field was generated on the surfaces of the SSFLC device, in two photoconducting layers coated on the sample substrates. The formation of a stable grating was observed.

Paper Details

Date Published: 18 August 2005
PDF: 9 pages
Proc. SPIE 5936, Liquid Crystals IX, 593606 (18 August 2005); doi: 10.1117/12.617007
Show Author Affiliations
M. Talarico, Univ. della Calabria (Italy)
D. Pucci, Univ. della Calabria (Italy)
M. Ghedini, Univ. della Calabria (Italy)
R. Termine, Univ. della Calabria (Italy)
A. Golemme, Univ. della Calabria (Italy)

Published in SPIE Proceedings Vol. 5936:
Liquid Crystals IX
Iam-Choon Khoo, Editor(s)

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