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The optimal antenna for nonlinear spectroscopy of weakly and strongly scattering nanoobjects

Title data

Schumacher, Thorsten ; Brandstetter, Matthias ; Wolf, Daniela ; Kratzer, Kai ; Hentschel, Mario ; Giessen, Harald ; Lippitz, Markus:
The optimal antenna for nonlinear spectroscopy of weakly and strongly scattering nanoobjects.
In: Applied Physics B. Vol. 122 (12 April 2016) Issue 4 . - No. 91.
ISSN 1432-0649
DOI: https://doi.org/10.1007/s00340-016-6364-5

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Optical nanoantennas, i.e., arrangements of plasmonic nanostructures, promise to enhance the light–matter interaction on the nanoscale. In particular, nonlinear optical spectroscopy of single nanoobjects would profit from such an antenna, as nonlinear optical effects are already weak for bulk material, and become almost undetectable for single nanoobjects. We investigate the design of optical nanoantennas for transient absorption spectroscopy in two different cases: the mechanical breathing mode of a metal nanodisk and the quantum-confined carrier dynamics in a single CdSe nanowire. In the latter case, an antenna with a resonance at the desired wavelength optimally increases the light intensity at the nanoobject. In the first case, the perturbation of the antenna by the investigated nanosystem cannot be neglected and off-resonant antennas become most efficient.

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
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik III - Nanooptik
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
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 13 May 2016 07:09
Last Modified: 04 Aug 2017 05:39
URI: https://eref.uni-bayreuth.de/id/eprint/32368