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American Institute of Physics, Review of Scientific Instruments, 3(95), 2024

DOI: 10.1063/5.0179549

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High-resolution MHz time- and angle-resolved photoemission spectroscopy based on a tunable vacuum ultraviolet source

Journal article published in 2024 by Lukas Hellbrück ORCID, Michele Puppin ORCID, Fei Guo ORCID, Daniel D. Hickstein ORCID, Siham Benhabib, Marco Grioni ORCID, J. Hugo Dil ORCID, Thomas LaGrange ORCID, Henrik M. Rønnow ORCID, Fabrizio Carbone ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The time- and angle-resolved photoemission spectroscopy (trARPES) allows for direct mapping of the electronic band structure and its dynamic response on femtosecond timescales. Here, we present a new ARPES system, powered by a new fiber-based femtosecond light source in the vacuum ultraviolet range, accessing the complete first Brillouin zone for most materials. We present trARPES data on Au(111), polycrystalline Au, Bi2Se3, and TaTe2, demonstrating an energy resolution of 21 meV with a time resolution of <360 fs, at a high repetition rate of 1 MHz. The system is integrated with an extreme ultraviolet high harmonic generation beamline, enabling an excellent tunability of the time-bandwidth resolution.