Synthesis and third-order optical nonlinear properties of organic polyheterocyclic materials

A series of three 1,4-bis(naphthothiazol-2-yl)benzene and bis(1,4-dialkoxylnaphthalene) tetrathiafulvalene materials were synthesized and the third-order nonlinear optical properties of the materials were studied with three-dimensional degenerate four-wave mixing (3D DFWM) geometry. The third-order nonlinear optical susceptibilities |χ(3)| of the materials were measured to be 4.32–5.05×10−13 esu and the third-order hyperpolorizabilities γ of the molecules were calculated to be 4.38–9.95×10−31 esu.