Linear and nonlinear optical investigations of ZnO nanoparticles for optoelectronic applications

In the present study, we report the preparation of ZnO nanoparticles and their linear and nonlinear optical (NLO) properties. The ZnO nanoparticles are prepared by chemical route method. The linear optical studies such as UV-Vis absorption and photoluminescence show the strong absorption at 333 nm and emission at 450 nm, respectively. The direct ban near optical (NLO) properties are investigated using Z-scan technique under DPSS CW laser at 532 nm wavelength. Mean time strong nonlinear absorption and negative nonlinear refractions are observed. The third order nonlinear optical coefficients and the magnitude of the susceptibility are determined. The optical limiting behavior of the nanoparticles is observed and the limiting threshold is calculated. The above results show that the prepared ZnO nanoparticles are suitable for nonlinear optical and optoelectronic applications.