Enhanced optical nonlinearity in beta-AgVO3 nanobelts on decoration with Ag nanoparticles

Manas R. Parida, Indian Institute of Technology (IIT)
C. Vijayan, Indian Institute of Technology (IIT)
Chandra Sekhar Rout, Birck Nanotechnology Center, Purdue University
C.S. Suchand Sandeep, Raman Res Lab
Reji Philip, Raman Res Lab

Date of this Version



Appl. Phys. Lett. 100, 121119 (2012)


Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 100, 121119 (2012) and may be found at http://dx.doi.org/10.1063/1.3696301. The following article has been submitted to/accepted by Applied Physics Letters. Copyright 2012. Manas R. Parida, C. Vijayan, C. S. Rout, C. S. Suchand Sandeep and Reji Philip. This article is distributed under a Creative Commons Attribution 3.0 Unported License.


This paper reports on the optical nonlinearity of beta-AgVO3 nanobelts and the modification in the physical mechanisms of nonlinear response on decorating with silver nanoparticles. The nanobelts are synthesized by a hydrothermal technique and characterized using SEM, TEM, and XRD etc. The nanobelts are found to exhibit large nonlinear optical absorption as revealed by open Z-scan measurements using 5 ns laser pulses at 532 nm. Nonlinearity appears to be arising from a combination of mechanisms of two photon absorption and saturable absorption (SA). Decoration with Ag nanoparticles is found to enhance the saturable absorption and alter the coefficient of nonlinear absorption of the nanobelts. Efficient optical limiting is demonstrated in both the nanobelt systems. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3696301]


Nanoscience and Nanotechnology