Study the Influence of Doping Electric and Magnetic Nanoparticles on the Nonlinear Optical Properties of Nematic Liquid Crystals

Abstract

In this work, the nonlinear optical properties response of nematic liquid crystal (6CHBT) and the impact of doping with two kinds of nanoparticles; Fe3O4 magnetic nanoparticles and SbSI ferroelectric nanoparticles have been studied using the non-linear dynamic method through z-scan measurement technique. This was achieved utilizing CW He-Ne laser. The pure LC and magnetic LC nanoparticle composite samples had a maximum absorption while the ferroelectric LC nanoparticle composite had a minimum absorption of the incident light. The nonlinear refractive index was positive for the pure and the doped magnetic nanoparticles LC composite samples, while it was negative for the doped ferroelectric LC composite. Studying the nonlinear optical properties of these types of liquids is very helpful in the field of liquid crystal applications like display screen and spatial light modulators.