18 August 2005 Photorefractive effects in ferroelectric liquid crystals
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Proceedings Volume 5936, Liquid Crystals IX; 593606 (2005) https://doi.org/10.1117/12.617007
Event: Optics and Photonics 2005, 2005, San Diego, California, United States
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.
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M. Talarico, M. Talarico, D. Pucci, D. Pucci, M. Ghedini, M. Ghedini, R. Termine, R. Termine, A. Golemme, A. Golemme, } "Photorefractive effects in ferroelectric liquid crystals", Proc. SPIE 5936, Liquid Crystals IX, 593606 (18 August 2005); doi: 10.1117/12.617007; https://doi.org/10.1117/12.617007
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