Studies of the nonlinear optical properties of a synthesized Schiff base ligand using visible cw laser beams

Abstract

The synthesized Schiff base ligand (compound Z1) is analyzed by IR, mass, 1HNMR, and 13CNMR spectroscopies. Computational chemical modeling is performed to examine the geometry optimization and molecular structure of compound Z1 by using the DFT/ WB97XD/6-31+G(d,p) method. The parameters HOMO–LUMO energies with nonlinear optical (NLO) properties are computed. The results indicate good agreement between experimental and theoretical data, so that compound Z1 to have good NLO properties. The NLO properties of the compound Z1 are examined under excitation with a 473 nm, cw, low power laser beam via two techniques, viz., diffraction patterns (DPs) and the standard Z-scan techniques. As high as 3.03 × 10−11 m2 W−1 of the compound Z1 of the nonlinear refractive index (NLRI), n2, is obtained via the DPs. Both static and dynamic all –optical switching (SAOS and DAOS) are tested using 473 nm and 532 nm cw low power laser beams.