TITLE:
Nonlinear Optical Properties, Optical Limiting and Optical Switching of Ag Nanoparticles Prepared by a Green Synthetic Method
AUTHORS:
Fryad Z. Henari, Hacene Manaa
KEYWORDS:
Green Synthesis, Ag Nanoparticles, Nonlinear Optical Properties, Optical Limiting, Optical Switching
JOURNAL NAME:
Optics and Photonics Journal,
Vol.8 No.7,
July
17,
2018
ABSTRACT: Silver nanoparticles were synthesized using an aqueous extract of cinnamon berks (cinnamon cassia) as a reducer and stabilizer. The synthesized silver nanoparticles were characterized using UV-Vis spectrometry and Transmission Electron Microscopy (TEM), which revealed the nano nature of the particles. Nonlinear absorption and nonlinear refraction were measured using a Z-scan technique at different wavelengths with CW lasers. The third order nonlinear susceptibility was found to be between (1.5 to 22) × 10-14 m2/V2. The nonlinear property of the synthesized silver nanoparticles was used to demonstrate optical limiting and all-optical switching. An optical limiting threshold was found to be 0.1 mW at 632.8 nm.