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NCUEIR > College of Science > Graduate Institute of Photonics Technologies > Periodical Articles > Item 987654321/15085

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/15085

Title:	Reorientational Optical Nonlinearity of Nematic Liquid-crystal Cells Near the Nematic-isotropic Phase Transition Temperature
Authors:	Tsai, Ming-Shan;Jiang, I-Min;Huang, Chi-Yen;Shih, Chia-Chi
Contributors:	光電科技研究所
Date:	2003-12
Issue Date:	2013-01-07T02:10:22Z
Publisher:	Optical Society of America
Abstract:	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.
Relation:	Optics Letters, 28(23): 2357-2359
Appears in Collections:	[Graduate Institute of Photonics Technologies] Periodical Articles

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