Dynamics of Laser-Induced Holographic Gratings in Dye-Doped Liquid Crystal Films
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概要
- 論文の詳細を見る
Dynamic holography and polarimetric methods are used to study torques on liquid crystals exerted by photo excited dyes doped in planar nematic liquid crystal (NLC) films. The dye used is methyl red (MR). The dynamical reorientation of liquid crystal directors induced by photo-excited dyes is examined. The results indicate that the dynamics include the initial transient reorientation, followed by the transient three-dimensional rotation, and finally the stable LC alignment parallel to the optical field. A model is presented to explain these results. Quantitative analyses of the grating dynamics yield the dye-diffusion coefficients in the directions parallel and perpendicular to the LC director.
- 2003-12-15
著者
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Tsai Ming-shann
Department Of Physics Chung Yuan Christian University
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Fuh Andy
Department Of Physics And Institute Of Electro-optical Science And Engineering National Cheng Kung U
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Mo Ting-shan
Department Of Physics National Cheng Kung University
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Lu Chia-Yu
Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, Taiwan 300, R.O.C.
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Lu Chia-Yu
Department of Physics, National Cheng Kung University, Tainan, Taiwan 701, ROC
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Mo Ting-Shan
Department of Electronic Engineering, Kun Shan University of Technology, Tainan, Taiwan 710, Republic of China
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Tsai Ming-Shann
Department of Applied Physics, National Chiayi University, Chiayi, Taiwan 600, ROC
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Fuh Andy
Department of Physics and Electro-Optical Institute, National Cheng Kung University, Tainan, Taiwan 701, R.O.C.
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Fuh Andy
Department of Physics and Institute of Electro-optics, National Cheng Kung University, Tainan, Taiwan 701, ROC
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