SKM 2023 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 43: Poster: Plasmonics and Nanooptics I

O 43.4: Poster

Dienstag, 28. März 2023, 18:00–20:00, P2/EG

Nonlinear near-field optical microscopy (NNOM) for plasmonic skyrmions — •Florian Mangold, Bettina Frank, and Harald Giessen — 4th Physics Institute, Research Center SCoPE, and IQST, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

In recent years, plasmonic skyrmions have become a growing field of research. The state-of-the-art detection is done with PEEM (photoemission electron microscopy) or SNOM (scanning near-field optical microscopy) measurements.

An alternative to these methods is nonlinear near-field optical microscopy (NNOM) which uses an optical nonlinear process to image evanescent waves on the sub-wavelength-scale and enables real-time imaging of surface waves. By combining information from real and Fourier-space images, it is possible to calculate the phase and the amplitude of all electric field components.

The NNOM setup will be used to complement PEEM and SNOM measurements and gives us additional possibilities to investigate topological features in plasmonics such as quasicrystals, skyrmions and skyrmion bags.