Structure and nonlinear optical studies of Au nanoparticles embedded in lead lanthanum borate glass

摘要

Metal nanoparticles of gold in various proportions were prepared by melt-quenching technique without any assistance of reducing agent. X-ray absorption near edge structure analysis shows that measurements at the Au L-3 edge were made on lanthanum lead borate doped with gold. X-ray absorption near edge structure shows that the oxidation state of Au and the analysis show the presence of gold nanoparticles. Electron microscopy and energy dispersive absorption X-ray spectroscopy confirm the size of Au nanoparticle inside the lead lanthanum borate glass. Nonlinear optical studies of Au doped oxide glass are performed using nanosecond laser pulse excitation. Z-scan experiments with 532 nm wave-length pulses are used to excite glass samples which show that optical limiting effect of these as-prepared glasses doped with Au nanoparticle was also studied. (C) 2014 Elsevier B.V. All rights reserved.