Third-harmonic spectroscopy and modeling of the nonlinear response of plasmonic 
nanoantennas

Metzger, B.; Hentschel, M.; Lippitz, M.; Giessen, H.

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Third-harmonic spectroscopy and modeling of the nonlinear response of plasmonic nanoantennas

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Lippitz, M.
Max Planck Society;

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Giessen, H.
Former Research Groups, Max Planck Institute for Solid State Research, Max Planck Society;

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Metzger, B., Hentschel, M., Lippitz, M., & Giessen, H. (2012). Third-harmonic spectroscopy and modeling of the nonlinear response of plasmonic nanoantennas. Optics Letters, 37(22), 4741-4743.

Cite as: https://hdl.handle.net/21.11116/0000-000E-C226-C

Abstract

We perform third-harmonic (TH) spectroscopy on rod-type gold nanoantenna arrays using widely tunable sub-30 fs laser pulses. We find the peak of the TH generation efficiency of the antenna arrays always slightly redshifted with respect to the peak of their linear extinction spectrum. We model the wavelength-dependent TH response quantitatively using a nonlinear harmonic oscillator model. (C) 2012 Optical Society of America