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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 6 — Mar. 17, 2008
  • pp: 4078–4084

Laser beam propagation in nematic liquid crystals at the temperature close to the nematic-isotropic critical point

Yu-Jen Chen, Yu-Sung Lin, I-Min Jiang, and Ming-Shan Tsai  »View Author Affiliations

Optics Express, Vol. 16, Issue 6, pp. 4078-4084 (2008)

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This study investigates the optical nonlinearity of beam propagation in homogeneously aligned nematic liquid crystal (NLC) cells at a temperature close to the nematic-isotropic temperature (TNI). The undulate propagation mode with convergent and divergent loops appearing alternately is reported and the thermally enhanced optical reorientation nonlinearity at the focus is described. The optically induced phase transition exists along the pump beam direction. With the application of the conscopic technique, the arrangements of LC at the focus are proposed in this study. Results of this study demonstrate that the evolution of the LC configuration was affected by the pump beam based on the analysis of conoscopic patterns.

© 2008 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.4870) Nonlinear optics : Photothermal effects

ToC Category:
Nonlinear Optics

Original Manuscript: February 1, 2008
Revised Manuscript: March 5, 2008
Manuscript Accepted: March 7, 2008
Published: March 11, 2008

Yu-Jen Chen, Yu-Sung Lin, I-Min Jiang, and Ming-Shan Tsai, "Laser beam propagation in nematic liquid crystals at the temperature close to the nematicisotropic critical point," Opt. Express 16, 4078-4084 (2008)

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