Optical Properties of Ag Nanoparticles Embedded Ba0.5Sr0.5TiO3 Films Prepared by Alternating Pulsed Laser Deposition
Abstract:Nanocomposite thin films consisting of nanometer-sized Ag particles embedded in amorphous Ba0.5Sr0.5TiO3 matrix were prepared on fused silica substrates by an alternating pulsed laser deposition method. Their optical nonlinearities have been studied using the Z-scan method. The surface plasmon resonance (SPR) peak shifts to red and increases with the increasing the volume fraction of Ag in the nanocomposite films. The magnitude of the third-order nonlinear susceptibility of the nanocomposite with an Ag volume fraction of 3.3% was calculated to be ∼2 × 10−8 esu at the SPR wavelength.
Document Type: Research Article
Publication date: 2006-11-01
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