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Doubling the Efficiency of Third Harmonic Generation by Positioning ITO Nanocrystals into the Hot-Spot of Plasmonic Gap-Antennas

Title data

Metzger, Bernd ; Hentschel, Mario ; Schumacher, Thorsten ; Lippitz, Markus ; Ye, Xingchen ; Murray, Christopher B. ; Knabe, Bastian ; Buse, Karsten ; Giessen, Harald:
Doubling the Efficiency of Third Harmonic Generation by Positioning ITO Nanocrystals into the Hot-Spot of Plasmonic Gap-Antennas.
In: Nano Letters. Vol. 14 (May 2014) Issue 5 . - pp. 2867-2872.
ISSN 1530-6992
DOI: https://doi.org/10.1021/nl500913t

Abstract in another language

We incorporate dielectric indium tin oxide nanocrystals into the hot-spot of gold nanogap-antennas and perform third harmonic spectroscopy on these hybrid nanostructure arrays. The combined system shows a 2-fold increase of the radiated third harmonic intensity when compared to bare gold antennas. In order to identify the origin of the enhanced nonlinear response we perform finite element simulations of the nanostructures, which are in excellent agreement with our measurements. We find that the third harmonic signal enhancement is mainly related to changes in the linear optical properties of the plasmonic antenna resonances when the ITO nanocrystals are incorporated. Furthermore, the dominant source of the third harmonic is found to be located in the gold volume of the plasmonic antennas.

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 13:40
Last Modified: 13 Nov 2015 13:40
URI: https://eref.uni-bayreuth.de/id/eprint/22210