8 May 2015 Photorefractive amplification of dynamic light signals using photoconductive ferroelectric liquid crystals
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Abstract
The photorefractive effect in photoconductive ferroelectric liquid crystal blends containing photoconductive chiral compounds was investigated. Terthiophene compounds possessing chiral structures were mixed with an achiral smectic C liquid crystal mixture. The blends exhibit the ferroelectric chiral smectic C phase. The photorefractivity of the liquid crystal blends was investigated by two-beam coupling experiments. The photoconductive ferroelectric liquid crystal blends prepared in this study exhibited a large gain coefficient of over 1200 cm-1 and a fast response time shorter than 1 ms. Amplification of an moving optical image signal of over 30 fps using the photorefractive ferroelectric liquid crystal was demonstrated.
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Takeo Sasaki, "Photorefractive amplification of dynamic light signals using photoconductive ferroelectric liquid crystals", Proc. SPIE 9508, Holography: Advances and Modern Trends IV, 95080C (8 May 2015); doi: 10.1117/12.2178730; https://doi.org/10.1117/12.2178730
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