@Article{, title={Diffraction Rings Pattern and Nonlinear Optical Properties of Hybrid ZnO-NPs / Epoxy Resin}, author={Ali H. AL-Hamdani and Zahraa M.AL-Asady}, journal={Engineering and Technology Journal مجلة الهندسة والتكنولوجيا}, volume={38}, number={3 part (A) Engineering}, pages={440-445}, year={2020}, abstract={n this research, the diffraction ring patterns scan and single-beam Z-scan techniques were used to measure the nonlinear refractive index (n2) and nonlinear absorption coefficient (β). Nano-composite sample, which consists of zinc oxide nanoparticles (ZnO-NPs), and epoxy resin polymer. The sample was prepared by the casting method. A second harmonic generation Nd: YAG laser, which operates at 532 nm and intensity 3183 W/cm2was used for the two techniques. Z-scan results showed that values for nonlinear refractive index n2and nonlinear absorption coefficient β were obtained of 6.59*10-9cm2/W and 1.75*10-3cm/W respectively.While results for the D-scan technique showed that the number of rings increases with the increasing of laser power.

} }