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題名: | 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 |
貢獻者: | 光電科技研究所 |
日期: | 2003-12
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上傳時間: | 2013-01-07T02:10:22Z
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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 |
顯示於類別: | [光電科技研究所] 期刊論文
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