Keunecke Marius, Möller Christina, Schmitt David, Nolte Hendrik, Jansen G S Matthijs, Reutzel Marcel, Gutberlet Marie, Halasi Gyula, Steil Daniel, Steil Sabine, Mathias Stefan
I. Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany.
Rev Sci Instrum. 2020 Jun 1;91(6):063905. doi: 10.1063/5.0006531.
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.
基于激光的高重复率极紫外（EUV）光源和多维光电子能谱技术的最新进展，使得新一代时间分辨光发射实验得以开展。在此，我们展示了一种由1 MHz飞秒EUV桌面光源驱动的时间分辨动量显微镜装置，该光源针对26.5 eV光子的产生进行了优化。该装置能够同时获取光电子动能和平面内动量的时间演化信息。我们基于对石墨烯的一系列静态和时间分辨测量，讨论了这项新实验的机遇与局限。
