Selected Lanthanide Complexes for Nonlinear Optical Applications

Abstract

In the present work, the second- and third-order nonlinear optical (NLO) properties of composite materials based on Europium (Eu) and Gadolinium (Gd) complexes and poly (methyl methacrylate) (PMMA) in thin film form were investigated. The thin films were prepared by using the spin coating technique. The Maker fringe technique was used to study the second and third harmonic generation (SHG and THG) in the picosecond regime at the incident wavelength of 1064 nm. After applying the corona poling approach, the second-order nonlinear susceptibility χ(2) and third-order nonlinear susceptibility χ(3) were estimated using the comparative models of Lee and Kubodera-Kobayashi, respectively. These compounds have good nonlinear properties, according to the data, which makes them a viable candidate for optoelectronic applications.