J Mater Sci Technol ›› 1999, Vol. 15 ›› Issue (02): 181-183.

• Research Articles • Previous Articles     Next Articles

Photorefractivity of Nematic Liquid Crystals

Haiguang ZHOU, Zhilin YANG   

  1. Department of Physics, University of Xiamen, Xiamen 361005, China
  • Received:1998-10-27 Revised:1998-12-12 Online:1999-03-28 Published:2009-10-10
  • Contact: Haiguang ZHOU

Abstract: A theoretical treatment of photo-refractive effect and experimental verifications of the associated nonlinear-optical processes in the nematic phase of liquid crystals are presented. The effect is attributed to the dc space charge fields induced by the photo-charges, which may come from the photo ionization impurities. The phenomenon is analyzed and a theoretical model of photo refractivity in nematic liquid crystals is developed. New experimental results are found to be in good agreement with the theory.

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