11 October 2012 Real-time formation of dynamic hologram in photorefractive ferroelectric liquid crystals
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The photorefractive effect in photoconductive ferroelectric liquid crystals (FLCs) that contain photoconductive chiral compounds was investigated. A series of novel photoconductive chiral compounds were synthesized. Terthiophene compounds with four chiral structures were chosen as the photoconductive chiral compounds and mixed with an achiral smectic C liquid crystal. The mixtures exhibit the ferroelectric chiral smectic C phase. The photorefractivity of the mixtures was investigated by two-beam coupling experiments. It was found that the FLCs containing the photoconductive chiral compound exhibit a large gain coefficient of over 800 cm-1 and a fast response time of 8 ms.
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Takeo Sasaki, Takeo Sasaki, Masashi Ikegami, Masashi Ikegami, Satoshi Kajikawa, Satoshi Kajikawa, Yumiko Naka, Yumiko Naka, "Real-time formation of dynamic hologram in photorefractive ferroelectric liquid crystals", Proc. SPIE 8474, Optical Processes in Organic Materials and Nanostructures, 84740S (11 October 2012); doi: 10.1117/12.930587; https://doi.org/10.1117/12.930587

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