2020/08/31 by J. Maklar, S. Dong, S. Beaulieu +7
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Advanced Electron Microscopy Techniques and Applications #Angle-resolved photoemission spectroscopy #Extreme ultraviolet #Laser-Matter Interactions and Applications #Microscope #Momentum (technical analysis) #Photocathodes and Microchannel Plates #Photoemission spectroscopy #Range (aeronautics) #Spectrometer #Spectrum analyzer #X-ray photoelectron spectroscopy #physics.ins-det
paper · pdf · doi:10.1063/5.0024493
19 pages, 9 figures. The following article has been submitted to Review of Scientific Instruments / AIP Publishing. After it is published, it will be found at https://aip.scitation.org/journal/rsi
openalex publication_date 2020/12/01 · arxiv created 2020/12/14 · arxiv updated 2020/12/15 · openalex created_date 2020/12/21 · openalex updated_date 2026/08/05
Time-of-flight-based momentum microscopy has a growing presence in photoemission studies, as it enables parallel energy- and momentum-resolved acquisition of the full photoelectron distribution. Here, we report table-top extreme ultraviolet time- and angle-resolved photoemission spectroscopy (trARPES) featuring both a hemispherical analyzer and a momentum microscope within the same setup. We present a systematic comparison of the two detection schemes and quantify experimentally relevant parameters, including pump- and probe-induced space-charge effects, detection efficiency, photoelectron count rates, and depth of focus. We highlight the advantages and limitations of both instruments based on exemplary trARPES measurements of bulk WSe2. Our analysis demonstrates the complementary nature of the two spectrometers for time-resolved ARPES experiments. Their combination in a single experimental apparatus allows us to address a broad range of scientific questions with trARPES.