- Journal Article
We investigate the nonlinear optical response of a noble metal surface. We derive the components of the third-order nonlinear susceptibility and determine an absolute value of chi((3)) approximate to 0.2nm(2) V-2, a value that is more than two orders of magnitude larger than the values found for typical nonlinear laser crystals. Using nonlinear four-wave mixing (4WM) with incident laser pulses of frequencies omega(1) and omega(2), we generate fields oscillating at the nonlinear frequency omega(4WM) = 2 omega(1) - omega(2). We identify and discuss three distinct regimes: (i) a regime where the 4WM field is propagating, (ii) a regime where it is evanescent, and (iii) a regime where the nonlinear response couples to surface plasmon polaritons. Show more
Journal / seriesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Pages / Article No.
PublisherThe Royal Society
SubjectNonlinear optics; Four-wave mixing; Nonlinear plasmonics; Nonlinear frequency mixing; Metamaterials; Nanophotonics
Organisational unit09698 - Quidant, Romain / Quidant, Romain
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