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 Karl Franzens University Graz

Graz University of Technology 

Topological plasmonics: Ultrafast vector movies on the nanoscale
Harald Giessen
University of Stuttgart
16:15 - 17:15 Tuesday 28 June 2022 KFU

Video: https://unimeet.uni-graz.at/b/tho-mxu-pqp-ua4

We present an ultrafast vector microscope with 10 nm spatial and subfemtosecond temporal resolution which is capable of mapping all three vector components of the electric field as well as the magnetic field of light on nanophotonic structures. As first application, we record and analyze the temporal evolution of plasmonic skyrmions and the skyrmion number on a nanostructured gold surface.

References
Ultrafast vector imaging of plasmonic skyrmion dynamics with deep subwavelength resolutionT. Davis, D. Janoschka, P. Dreher, B. Frank, F. Meyer zu Heringdorf and H. Giessen Science 368, eaba6415 (2020).
Revealing the subfemtosecond dynamics of orbital angular momentum in nanoplasmonic vortices G. Spektor, D. Kilbane, A. Mahro, B. Frank, S. Ristok, L. Gal, P. Kahl, D. Podbiel, S. Mathias, H. Giessen, F. Meyer zu Heringdorf, M. Orenstein and M. Aeschlimann Science 355, 1187 (2017).