Non Linear optical properties of silver nanoparticles doped polyvinyl alcohol

Abstract

In the present work, synthesis silver nanoparticle by laser ablation by using (Q -switched Nd:YAG) pulse duration(E=80mJ, λ=532nm) of silver metal target in ethanol,Z-scan technique was used to study the nonlinear optical properties, represented by the nonlinear refractive index and nonlinear absorption coefficients of Ag NPs/PVA.In this technique, used CW diode laser (λ= 650nm,p=50mw).The results show that the nonlinear refractive indexnegative (self-defocusing) and nonlinear absorption coefficients two photonabsorption (TPA).