Abstract

Spectral dependent values of the third-harmonic-generation susceptibility Χ(3)(3Ω:Ω,Ω,Ω) of Ag-nanoparticles have been successfully determined. When the third-harmonic-generation wavelength coincides with the Ag nanoparticles' plasmon-resonant frequency, strong Χ(3)(3Ω:Ω,Ω,Ω) enhancement is experimentally proved for the first time.

© 2006 Optical Society of America

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