SKM 2023 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 80: Plasmonics and Nanooptics IV: Light-Matter Interaction and Spectroscopy III

O 80.6: Vortrag

Donnerstag, 30. März 2023, 16:30–16:45, CHE 89

Phase-resolved mapping of plasmonic resonances at nanostructures — •Tim Dauwe^1,2, Hugo Lourenco-Martins^1,2, Murat Sivis^1,2, Jakob Hagen^1,2, and Claus Ropers^1,2 — ¹Max Planck Institute for Multidisciplinary Sciences, 37077 Göttingen, Germany — ²IV. Physical Institute, University of Göttingen, 37077 Göttingen, Germany

In this contribution, we study resonant plasmonic nanostructures by a combination of inelastic electron-light scattering techniques. We investigate metallic nanorods using electron-energy loss spectroscopy (EELS) and photon-induced near-field electron microscopy (PINEM), elucidating spectrally-dependent mode profiles and symmetries using spontaneous and stimulated interactions. We explore multicolor excitation and nonlinear wave mixing as contrast mechanisms accessing spatial phase profiles and local nonlinear response.