Investigation of axial ordering in doped liquid crystals by second harmonic generations

Abstract

The effect of axial ordering in determining macroscopic second order nonlinear optical response is investigated by the second harmonic generation measurement. Maier-Saupe mean field theory was employed to estimate the axial ordering contributions. The magnitude of second harmonic generations as a function of a dc external field suggests that the effect of axial ordering is negligible while polar ordering is dominant.