Photoinduction of nematic order in isotropic phase

S. P. Palto; T. Sergan; Georges E. Durand; C. Germain; J. Malthete; A. Moradpour

doi:10.1117/12.230636

19 January 1996 Photoinduction of nematic order in isotropic phase

S. P. Palto, T. Sergan, Georges E. Durand, C. Germain, J. Malthete, A. Moradpour

Proceedings Volume 2731, International Liquid Crystal Workshop on Surface Phenomena; (1996) https://doi.org/10.1117/12.230636
Event: International Liquid Crystal Workshop: Surface Phenomena, 1995, St. Petersburg, Russian Federation

Abstract

The induction of orientational order close to a surface has been observed for an isotropic diacetylene compound under pulsed laser illumination into its absorption band. The value of the induced birefringence is proportional to the square of the intensity of the absorbed light. The direction of the photoinduced optical axis is defined both by the substrate surface and the light polarization vector. The observed phenomenon is explained by photoinduction of fluctuations of the nematic order in the vicinity of the surface and reorientation of these fluctuations under the polarized light illumination.

Citation Download Citation

S. P. Palto, T. Sergan, Georges E. Durand, C. Germain, J. Malthete, and A. Moradpour "Photoinduction of nematic order in isotropic phase", Proc. SPIE 2731, International Liquid Crystal Workshop on Surface Phenomena, (19 January 1996); https://doi.org/10.1117/12.230636

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