Dynamic studies of holographic gratings in dye-doped liquid-crystal films

Andy Ying-Guey Fuh; Chi-Chang C. Liao; Kuei-Chu Hsu; Chao-Liang Lu; Chia-Yi Tsai

doi:10.1117/12.453265

12 December 2002 Dynamic studies of holographic gratings in dye-doped liquid crystal films

Andy Ying-Guey Fuh, Chi-Chang C. Liao, Kuei-Chu Hsu, Chao-Liang Lu, Chia-Yi Tsai

Proceedings Volume 4799, Liquid Crystals VI; (2002) https://doi.org/10.1117/12.453265
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The dynamic behavior of a holographic grating induced in a homeotropically aligned dye-doped liquid-crystal film is investigated. In the presence of an applied dc voltage, photoexcited azo dyes induce a photorefractive grating and then diffuse and are absorbed onto cell substrates. The reorientation of liquid crystals as a result of adsorbed dyes leads to a phase grating that is phase shifted 90° from the photorefractive grating. Competition of these two gratings induces two-beam couplings of the writing beams, initially transferring energy from beam 1 to beam 2 and then, after a pause, from beam 2 to beam 1.

Citation Download Citation

Andy Ying-Guey Fuh, Chi-Chang C. Liao, Kuei-Chu Hsu, Chao-Liang Lu, and Chia-Yi Tsai "Dynamic studies of holographic gratings in dye-doped liquid crystal films", Proc. SPIE 4799, Liquid Crystals VI, (12 December 2002); https://doi.org/10.1117/12.453265

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