Related Experiment Video
Updated: Mar 8, 2026

An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
Published on: October 23, 2018
Ultrafast transmission electron microscopy using a laser-driven field emitter: Femtosecond resolution with a high
Armin Feist1, Nora Bach1, Nara Rubiano da Silva1
14th Physical Institute - Solids and Nanostructures, University of Göttingen, Göttingen, Germany.
Abstract:
We present the development of the first ultrafast transmission electron microscope (UTEM) driven by localized photoemission from a field emitter cathode. We describe the implementation of the instrument, the photoemitter concept and the quantitative electron beam parameters achieved. Establishing a new source for ultrafast TEM, the Göttingen UTEM employs nano-localized linear photoemission from a Schottky emitter, which enables operation with freely tunable temporal structure, from continuous wave to femtosecond pulsed mode. Using this emission mechanism, we achieve record pulse properties in ultrafast electron microscopy of 9Å focused beam diameter, 200fs pulse duration and 0.6eV energy width. We illustrate the possibility to conduct ultrafast imaging, diffraction, holography and spectroscopy with this instrument and also discuss opportunities to harness quantum coherent interactions between intense laser fields and free-electron beams.
Related Concept Videos
Transmission Electron Microscopy
Overview of Electron Microscopy
Overview of Microscopy Techniques
Super-resolution Fluorescence Microscopy
Scanning Electron Microscopy
Fundamental Principles
Accelerated...
Confocal Fluorescence Microscopy

