Thermomechanical mechanism of orientational optical nonlinearity in twisted nematic liquid crystals, By Jafar Poursamad Bonab

Research

Title	Thermomechanical mechanism of orientational optical nonlinearity in twisted nematic liquid crystals
Type	Article
Keywords	—
Researchers	Jafar Poursamad Bonab، A. K. Aleksanyan، Mariam Hakobyan

Abstract

In a nonuniform nematic liquid crystal director reorientation may take place as a result of a temperature gradient. We formulated a two-dimensional model of the temperature gradient caused by the light absorption of a Gaussian laser beam impinging normally on the liquid crystal cell. Within this model, we calculated the director reorientation and the subsequent optical nonlinearity of the liquid crystal.