92. Phase grating generation and optical phase conjugation in photorefractive polymer dissolved liquid crystal composites, H. Ono, K. Kitamura and N. Kawatsuki, Liq. Cryst. 31 (2004) 801-8 06.


The orientational photorefractive properties of the photorefractive mesogenic composites have been investigated by means of both two-beam coupling and degenerate four wave mixing. Photorefractive mesogenic composites, consisting of low-molar-mass liquid crystals, polymer, and photoconductive sensitizer, constitute novel organic materials possessing high-performance photorefactivity. The refractive index change was estimated on the basis of the theory of the two-beam coupling and four wave mixing, and large index modulation over 0.01 is successfully obtained.

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