Azimuthal rotation of nematic layer director under pulsed laser radiation

Georgy L. Nekrasov; Tatiana A. Davidovich

doi:10.1117/12.323683

23 September 1998 Azimuthal rotation of nematic layer director under pulsed laser radiation

Georgy L. Nekrasov, Tatiana A. Davidovich

Proceedings Volume 3488, Nonlinear Optics of Liquid and Photorefractive Crystals II; (1998) https://doi.org/10.1117/12.323683
Event: International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 1997, Partenit, Crimea, Ukraine

Abstract

The result of experimental studies of thermal mechanism of optical response of a c.w. He-Ne laser probe beam when a dye-activated nematic layer is irradiated with free-lasing radiation of a ruby laser are analyzed. Experimental geometry is such that planar-oriented nematic laser is perpendicular to the direction of the acting ruby laser beam, the electric field vector of this radiation forming an angle of 45 degrees with the layer director. Analysis of experimental oscillograms shows that, besides thermal impact whose intensity is determined by the number of oscillations, there is also variation in the oscillating signal amplitude. Their amplitude is determined by an azimuthal angle between vector E of acting laser beam and layer director. This angle can be induced only with action of electrical field of radiation.

Citation Download Citation

Georgy L. Nekrasov and Tatiana A. Davidovich "Azimuthal rotation of nematic layer director under pulsed laser radiation", Proc. SPIE 3488, Nonlinear Optics of Liquid and Photorefractive Crystals II, (23 September 1998); https://doi.org/10.1117/12.323683

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