Preparation and study of nonlinear optical response of Ag and Au nano particles doped PVA/PVP thin films

Nanosize Ag and Au were prepared by laser ablation method and the nonlinear optical properties of Ag and Au nanoparticles doped polyvinylalcohol (PVA) /polyvinylpyrrolidone (PVP) blend films were investigated using Z-scan technique with 7 ns Nd: YAG laser pulses at 532 nm. From open aperture Z-scan...

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Bibliographic Details
Published in:Journal of optics (New Delhi) 2011-12, Vol.40 (4), p.193-197
Main Authors: Sudheesh, P., Sharafudeen, K. N., Vijayakumar, S., Chandrasekharan, K.
Format: Article
Language:English
Subjects:
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Research Article
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Summary:Nanosize Ag and Au were prepared by laser ablation method and the nonlinear optical properties of Ag and Au nanoparticles doped polyvinylalcohol (PVA) /polyvinylpyrrolidone (PVP) blend films were investigated using Z-scan technique with 7 ns Nd: YAG laser pulses at 532 nm. From open aperture Z-scan measurements it is found that both the Ag/PVA-PVP and Au/PVA-PVP films exhibited reverse saturable absorption. Nonlinear absorption coefficient, nonlinear refractive indices and third-order susceptibility were determined.
ISSN:0972-8821
0974-6900
DOI:10.1007/s12596-011-0053-x