Facile synthesis of a glass film containing Ca2CuO3 micro-crystals and exhibiting a third-order non-linear property

A two-step synthetic method was used to obtain a Pb glass film containing micro-crystalline Ca 2 CuO 3 particles on a K 9 glass substrate. The Ca 2 CuO 3 micro-crystals were prepared for the first time by a high-temperature solid state method. The synthesized films were obtained on K 9 glass substrates by screen-printing and co-sintering techniques, using Pb glass powder and Ca 2 CuO 3 micro-crystals as reagents under different sintering temperatures . Secondly, micro-crystalline Ca 2 CuO 3 Pb-glass films with different thickness were obtained by mechanical polishing for various times. The analysis of the surface structure, purity of the Ca 2 CuO 3 phase and confirmation of the Pb-glass components in the given composites were provided by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The interactions between phonons and atoms of the micro-crystalline Ca 2 CuO 3 particles embedded in the Pb-glass matrix were characterized by means of Raman scattering spectra. Moreover, the nonlinear optical property of the film was detected by a top-hat Z-scan technique with a laser duration of 190   ns at 532   nm. The results showed that the film polished for 120   min exhibited a large third-order non-linear susceptibility χ (3) of 6.1×10 −12   esu, suggesting its potential application in all-optical switches and integrated electron devices.