The aim of the present study was to evaluate the properties of linear and
nonlinear optics of the Schiff base Salen. Crystal structure of nanoparticles was
determined by a Bruker make diffractometer, Cu-K X-rays of wavelength (=1.5406
Å). The XRD patterns were recorded in the 2 range of 10–90o with a step width of 0.02
s-1. The UV-Vis Spectra recorded on a computerized double - beam Shimadzu 2550
spectrophotometer, using two matched 10.0 mm quartz cell. In this paper, refractive
index, extinction coefficient and optical conductivity are calculated by using UV
spectrum (Ultraviolet). Also, nonlinear optical property of matter and dielectric tensor are
computed by using Gaussian software and based on density functional theory (DFT). The
results showed that with decreasing of wavelength, the refractive index increase from 1.19
value to 2.64. This is due to the strong interaction between photons and conducting
electrons. Also material was not asymptotic and has non-linear optical property, Also the
triclinic structure for this material has been specified through dielectric tensor. تفاصيل المقالة