Kiran, P P and De, Goutam and Rao, D N (2003) Nonlinear optical properties of copper and silver nanoclusters in SiO(2) sol-gel films. IEE Proceedings-Circuits Devices and Systems, 150 (6). pp. 559-562. ISSN 1350-2409

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Abstract

Nonlinear optical properties of Ag-Cu nanoclusters codoped in a SiO(2) substrate prepared using the sol-gel technique are investigated under the influence of the second harmonic of a high-power nanosecond Nd:YAG laser. These films show self-defocusing nonlinearity and good nonlinear absorption behaviour. The nonlinear refractive index decreased with decreasing particle size. The nonlinear absorption, however, increased with increase in Cu concentration. The observed nonlinear absorption is explained through an interband absorption mechanism. Nonlinear scattering from the nanoparticles is also observed at higher intensities.

Item Type:	Article
Additional Information:	6th International Conference on Optoelectronics, Fibre Optics and Photonics, MUMBAI, INDIA, DEC, 2002
Subjects:	Processing Science
Divisions:	Sol Gel
Depositing User:	Subhra Lahiri
Date Deposited:	23 Feb 2012 13:04
Last Modified:	23 Feb 2012 13:04
URI:	http://cgcri.csircentral.net/id/eprint/964

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