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Nonlinear Spectroscopy on the Plasmonic Analog of Electromagnetically Induced Absorption : Revealing Minute Structural Asymmetries

Title data

Krauth, Joachim ; Schumacher, Thorsten ; Defrance, Josselin ; Metzger, Bernd ; Lippitz, Markus ; Weiss, Thomas ; Giessen, Harald ; Hentschel, Mario:
Nonlinear Spectroscopy on the Plasmonic Analog of Electromagnetically Induced Absorption : Revealing Minute Structural Asymmetries.
In: ACS Photonics. (9 October 2019) .
ISSN 2330-4022
DOI: https://doi.org/10.1021/acsphotonics.9b00938

Abstract in another language

Tailoring not only the linear but also the nonlinear properties of plasmonic structures has been a longstanding idea. The plasmonic dolmen structure with its many degrees of freedom in design has been of particular interest. We are investigating this system in detail in the retarded weak-coupling regime, the so-called plasmonic analog of electromagnetically induced absorption. While it is generally expected that the enhanced absorbance leads to an increased nonlinear generation, we find that the details are more complex. A thorough wavelength and polarization resolved study reveals two distinct nonlinear contributions. Our nonlinear spectroscopy method exhibits a surprisingly high sensitivity to minute structural asymmetries. Our experimental results are corroborated by finite-element simulation. We envision that our findings will stimulate further research into phase tuning, structural symmetries, and manipulation in nonlinear plasmonic systems in order to fully exploit the ability to tailor the linear and specifically the nonlinear optical properties of the nanostructured matter.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: nonlinear plasmonics; spectroscopy; nonlinear spectroscopy; structural asymmetry; 3D nanostructure; electromagnetically induced absorption
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
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 06 Nov 2019 08:37
Last Modified: 06 Nov 2019 08:37
URI: https://eref.uni-bayreuth.de/id/eprint/53001