Time-resolved momentum microscopy with a 1 MHz high-harmonic extreme ultraviolet beamline
Marius Keunecke, Christina Möller, David Schmitt, Hendrik Nolte, G. S. Matthijs Jansen, Marcel Reutzel, Marie Gutberlet, Gyula Halasi, Daniel Steil, Sabine Steil, Stefan Mathias
Abstract
Recent progress in laser-based high-repetition rate extreme ultraviolet (EUV) light sources and multidimensional photoelectron spectroscopy enables the build-up of a new generation of time-resolved photoemission experiments. Here, we present a setup for time-resolved momentum microscopy driven by a 1 MHz fs EUV table-top light source optimized for the generation of 26.5 eV photons. The setup provides simultaneous access to the temporal evolution of the photoelectron's kinetic energy and in-plane momentum. We discuss opportunities and limitations of our new experiment based on a series of static and time-resolved measurements on graphene.