National Changhua University of Education Institutional Repository : Item 987654321/15085
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题名: Reorientational Optical Nonlinearity of Nematic Liquid-crystal Cells Near the Nematic-isotropic Phase Transition Temperature
作者: Tsai, Ming-Shan;Jiang, I-Min;Huang, Chi-Yen;Shih, Chia-Chi
贡献者: 光電科技研究所
日期: 2003-12
上传时间: 2013-01-07T02:10:22Z
出版者: Optical Society of America
摘要: We address the reorientational optical nonlinearity of homogeneously aligned neamtic liquid-crystal (NLC) cells. The propagation of light in NLC cells depend strongly on temperature. At a temperature approaching the clearing point, an undulating beam and multifocal points are observed in the NLC cell by use of a polarizing optical microscope. Using a conoscopic technique, we observed novel consecutive concentric and parabolic patterns projected onto a screen. Optical energy is considered to compete with thermal energy to affect NLC’s orientation and to generate singularities in the steady state. A model of the configuration of the liquid crystal’s orientation is proposed.
關聯: Optics Letters, 28(23): 2357-2359
显示于类别:[光電科技研究所] 期刊論文

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