Photorefractive Ferroelectric Liquid Crystals Possessing Photoconductive Compounds That Absorb Longer Wavelength

Abstract

Photorefractive (PR) effect is a phenomenon in which change in the refractive index is induced by interference of sensitive wavelength light. Previous study has shown that PR effect can be caused at 488 nm laser. In this study, PR materials sensitive to 633 nm laser was used to try to bring about PR effect. Certainly, PR effect is observed, and PR characteristic has increased as the concentration of photoconductive compounds. But, when addition amounts of photoconductive compounds pass over 1.1 wt% PR characteristic has been decreased.