Journal
JOURNAL OF OPTICS-INDIA
Volume 40, Issue 4, Pages 193-197Publisher
SPRINGER INDIA
DOI: 10.1007/s12596-011-0053-x
Keywords
Laser ablation; Ag and Au nanoparticles; Metal colloids; Optical nonlinearity
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Funding
- Department of Science and Technology, Govt. of India under. DST [SR/S2/LOP-10/2006]
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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 thirdorder susceptibility were determined.
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