Photo-aligned and photo-conductive polymer layers for photorefractive liquid crystal cells of high transmittance (original) (raw)

Optical Materials, 2003

Abstract

The optical performance of photorefractive cells of liquid crystals strongly depends on the alignment of liquid crystals stabilized by surface states. Two photo-aligned polymer layers with relatively weak anchoring energy were investigated by FT-IR and UV/VIS spectroscopies. The cells without alignment layers showed significant scatterings due to random switching under an applied field. The cells with photo-alignment layers showed the

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