Open AccessSpectral mapping of the third-order optical nonlinearity of glass-metal nanocomposites
Author(s) -
Mikko Halonen,
A. A. Lipovskii,
Valentina Zhurikhina,
D. A. Lyashenko,
Yuri Svirko
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.017170
Subject(s) - optics , materials science , femtosecond , wavelength , surface plasmon resonance , surface plasmon , absorption (acoustics) , surface plasmon polariton , plasmon , optoelectronics , laser , physics , nanoparticle , nanotechnology
By tuning wavelengths of the femtosecond pump and probe pulses we mapped the nonlinear absorption of copper-glass nanocomposites within 520-620 nm range. At the pump intensity of 3 GW/cm(2), the induced transmission rise was as high as 20%. The imaginary part of the third-order optical susceptibility of the nanocomposites as a function of the probe wavelength reproduced well the spectral profile of the surface plasmon resonance in copper. In contrast, the imaginary part of the third-order optical susceptibility as a function of the pump wavelength did not reproduce the plasmon profile being wider than the latter.