Optical nonlinearity due to thermomechanical effect in the planar and homeotropic nematic liquid crystals, By Jafar Poursamad Bonab

Research

Title	Optical nonlinearity due to thermomechanical effect in the planar and homeotropic nematic liquid crystals
Type	Article
Keywords	Liquid crystals Thermomechanical effect Boundary condition Optical nonlinearity
Researchers	Jafar Poursamad Bonab، Arash Phirouznia، Mostafa Sahrai

Abstract

Possibility of observing third thermomechanical (TM) effect in uniform nematic liquid crystals (NLC) with proper selection of boundary conditions on the cell walls is theoretically studied. Absorption of a light wave induces the needed temperature gradient for the TM effect. The molecular director reorientation due to third TM effect and the induced phase shift on the probe beam are calculated. The forth TM coefficient can be measured directly by the method proposed in this work.