Nonlinear optical properties of size-variable silver nanoparticles dispersed in water and potassium bromide

Abstract

We report on the nonlinear properties of size-variable Silver nanoparticles (AgNPs) which are synthesized based on the complexing agent method using different pH of the synthesizer. The z-scan technique is used to characterize nonlinear optical properties of AgNPs products. The required z-scan sample is provided by suspending the AgNPs in distilled water and dispersing them in Potassium Bromide (KBr) as host materials. Obtained results indicated an average nonlinear index of − 0.79 × 10–7 cm2/W in water and of − 2.09 × 10–7 cm2/W in KBr at 1064 nm. Furthermore, an average nonlinear absorption of 2.23 × 10–3 cm/W in water and 5.09 × 10–3 cm/W in KBr is measured for the synthesized AgPNs. The results affirm that as the AgNPs sizes are increased, their nonlinear properties are significantly improved in both KBr and water. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.