Polarization Dependent Enhancement of Second-Harmonic Generation by Distributed Feedback Cavity Action in a Helicoidal Ferroelectric Liquid Crystal Cell

Abstract

A special phase matching for second harmonic (SH) generation was achieved in helicoidal structure of ferroelectric liquid crystal (FLC) using normally incident two counter propagating waves, when the wavelength of the SH wave was near the selective reflection band edge. In this paper, the effect of the polarizations of the two counter propagating waves on this SHG process was studied.