Third-order susceptibility of gold for ultrathin layers | Zendy

Oleg Lysenko | Zendy; Morten Bache | Zendy; Andrei V. Lavrinenko | Zendy

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Third-order susceptibility of gold for ultrathin layers

Author(s) -

Oleg Lysenko,

Morten Bache,

Andrei V. Lavrinenko

Publication year - 2016

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.41.000317

Subject(s) - plasmon , materials science , surface plasmon polariton , optics , surface plasmon , picosecond , polariton , nonlinear optics , refractive index , optoelectronics , nonlinear system , laser , physics , quantum mechanics

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.

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