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Dresden 2020 – scientific programme

The DPG Spring Meeting in Dresden had to be cancelled! Read more ...

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O: Fachverband Oberflächenphysik

O 18: Plasmonics and Nanooptics II: Ultrafast and Nonlinear Phenomena (joint session O/CPP)

O 18.3: Talk

Monday, March 16, 2020, 15:45–16:00, WIL A317

Coherent two-dimensional nanoscopy on coupled plasmonic nanostructures — •Lysanne Monika Dietrich1, Daniel Friedrich2, Jessica Meier2, Enno Krauss2, Daniel Fersch1, Raphael Wichary1, Victor Lisinetskii1, Matthias Hensen1, Bert Hecht2, and Tobias Brixner11Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany — 2NanoOptics & Biophotonics Group, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany

Two-dimensional (2D) nanoscopy combines the femtosecond time resolution of coherent 2D spectroscopy with nanoscale selectivity: Instead of measuring optical diffraction-limited light fields, we detect photoemitted electrons with a spatial resolution < 5 nm utilizing aberration-corrected photoemission electron microscopy (AC-PEEM) [1]. Since 2D spectroscopy provides direct insights into couplings between single system constituents, we investigate coupled plasmonic nanostructures (i.e. "dolmen" structures) as a model system [2,3] to demonstrate the additional spatial resolution. We complement our experimental findings by simulated 2D spectra using the local response function as retrieved from finite-difference time-domain (FDTD) method.

[1] B. Huber et al., Rev. Sci. Instrum., 90, 113103 (2019).
[2] H. Yu et al., ACS Nano, 10, 10373-10391 (2016).
[3] J.-S. Huang et al., Nano Lett., 10, 2105-2110 (2010).

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