Reorientational optical nonlinearity of nematic liquid-crystal cells near the nematic-isotropic phase transition temperature

Ming Shan Tsai, I. Min Jiang, Chi Yen Huang, Chia Chi Shih

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2357-2359
Number of pages3
JournalOptics Letters
Volume28
Issue number23
DOIs
Publication statusPublished - 2003 Dec 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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