Regensburg 2025 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 26: Focus Session Ultrafast Electron Microscopy at the Space-Time Limit III

O 26.1: Hauptvortrag

Dienstag, 18. März 2025, 10:30–11:00, H2

Attosecond Electron Microscopy — •Peter Baum — Universität Konstanz, Germany

All processes in materials, nanostructures and devices are on a fundamental level defined by electronic and atomic motion from initial to final conformations. Our approach for a direct, real-space visualization is pump-probe electron diffraction and microscopy with single-electron wavepackets under the control of laser light. The resulting few-femtosecond and attosecond time resolution allows to see almost any light-matter interaction or structural dynamics on fundamental scales in space and time. We report selected results on strongly correlated materials, rotational phonons, electronic circuitry, free-electron quantum phenomena and attosecond dynamics in nanomaterials.

Keywords: electron microscopy; attosecond; quantum optics; chiral phonons