MgO nanoparticle effect on nonlinear refractive index of nematic liquid crystal doped with Sudan black B dye using Z-scan method

In this paper, by capitalizing on z-scan technique and using cw He–Ne laser at 632.8 nm, we investigated the impact of added MgO nanoparticles nonlinear optical properties 6CHBT liquid crystal which was doped with Sudan black B dye. The applied cell had homogeneous alignment. were to 0.3 wt.% dye three concentrations 0.1, 0.6 wt.%. It found that did not significantly change refractive index compound 0.1 concentrations; however, they enhanced concentration. accumulation in high causes scattering light can reduce intensity transmitted and, as a result, effects.