Abstract
This Letter presents an experimental study of nonlinear plasmonic effects in
gold-stripe waveguides. The optical characterization is performed by a
picosecond laser and reveals two nonlinear effects related to propagation of
long-range surface plasmon polaritons: nonlinear power transmission of plasmonic
modes and spectral broadening of plasmonic modes. The experimental values of the
third-order susceptibility of the gold layers are extracted. They exhibit a
clear dependence on layer thickness.
© 2016 Optical Society of America
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Corrections
8 January 2016: A correction was made to the title of Table 1.
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