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Third Harmonic Mechanism in Complex Plasmonic Fano Structures

Title data

Metzger, Bernd ; Schumacher, Thorsten ; Hentschel, Mario ; Lippitz, Markus ; Giessen, Harald:
Third Harmonic Mechanism in Complex Plasmonic Fano Structures.
In: ACS Photonics. Vol. 1 (May 2014) Issue 6 . - pp. 471-476.
ISSN 2330-4022
DOI: https://doi.org/10.1021/ph5000677

Abstract in another language

We perform third harmonic spectroscopy of dolmen-type nanostructures, which exhibit plasmonic Fano resonances in the near-infrared. Strong third harmonic emission is predominantly radiated close to the low energy peak of the Fano resonance. Furthermore, we find that the third harmonic polarization of the subradiant mode interferes destructively and diminishes the nonlinear signal in the far-field. By comparing the experimental third harmonic spectra with finite element simulations and an anharmonic oscillator model, we find strong indications that the source of the third harmonic is the optical nonlinearity of the bare gold enhanced by the resonant plasmonic polarization.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik III - Nanooptik > Lehrstuhl Experimentalphysik III - Nanooptik - Univ.-Prof. Dr. Markus Lippitz
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik III - Nanooptik
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 13 Nov 2015 13:36
Last Modified: 13 Nov 2015 13:36
URI: https://eref.uni-bayreuth.de/id/eprint/22209