Non-linear optical properties of silver nanoparticles prepared by hydrogen reduction method

作者：Ara M H Majles^*; Dehghani Z; Sahraei R; Nabiyouni G

来源：Optics Communications, 2010, 283(8): 1650-1653.

DOI：10.1016/j.optcom.2009.09.025

• Nanomaterials
• Optical materials and properties
• z-Scan technique

Silver nanoparticles have been prepared using hydrogen gas as the reducing agent for silver nitrate and poly(vinyl pyrrolidone) as the capping agent; the reaction was carried out at 70 degrees C for 3 h The size of the nanoparticles was found to be about 20 nm as analyzed using transmission electron micrographs. The X-ray diffraction pattern revealed the face-centered cubic (fcc) structure of silver nanoparticles. The linear absorption of Ag nanoparticles, alpha, is obtained about 371 cm(-1) The non-linear refractive indices of silver nanoparticles were defined by the z-scan technique using CW He-Ne laser (lambda = 632 8 nm) at different incident intensities. The magnitude of non-linear refractive

• 出版日期2010-4-15