Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 91, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/5.0024493
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Funding
- Max Planck Society
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [ERC-2015-CoG-682843]
- German Research Foundation (DFG) within the Emmy Noether program [RE 3977/1]
- DFG [FOR 1700, SFB/TRR 227]
- NSERC-Banting Postdoctoral Fellowships Program
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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.
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