---
_id: '62057'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n          <jats:p>Time-resolved momentum
    microscopy is an emerging technique based on photoelectron spectroscopy for characterizing
    ultrafast electron dynamics and the out-of-equilibrium electronic structure of
    materials in the entire Brillouin zone with high efficiency. In this article,
    we introduce a setup for time-resolved momentum microscopy based on an energy-filtered
    momentum microscope coupled to a custom-made high-harmonic generation photon source
    driven by a multi-100 kHz commercial Yb-ultrafast laser that delivers fs pulses
    in the extreme ultraviolet range. The laser setup includes a nonlinear pulse compression
    stage employing spectral broadening in a Herriott-type bulk-based multi-pass cell.
    This element allows flexible tuning of the driving pulse duration, providing a
    versatile time-resolved momentum microscopy setup featuring two operational modes
    designed to enhance either the energy or time resolution. We show the capabilities
    of the system by tracing ultrafast electron dynamics in the conduction band valleys
    of a bulk crystal of the 2D semiconductor WS<jats:sub>2</jats:sub>. Using uncompressed
    driving laser pulses, we demonstrate an energy resolution better than (107 ± 2)
    meV, while compressed pulses lead to a time resolution better than (48.8 ± 17)
    fs.</jats:p>"
article_number: '3611'
author:
- first_name: Karl Jakob
  full_name: Schiller, Karl Jakob
  last_name: Schiller
- first_name: Lasse
  full_name: Sternemann, Lasse
  last_name: Sternemann
- first_name: Matija
  full_name: Stupar, Matija
  last_name: Stupar
- first_name: Alan
  full_name: Omar, Alan
  last_name: Omar
- first_name: Martin
  full_name: Hoffmann, Martin
  last_name: Hoffmann
- first_name: Jonah Elias
  full_name: Nitschke, Jonah Elias
  last_name: Nitschke
- first_name: Valentin
  full_name: Mischke, Valentin
  last_name: Mischke
- first_name: David Maximilian
  full_name: Janas, David Maximilian
  last_name: Janas
- first_name: Stefano
  full_name: Ponzoni, Stefano
  last_name: Ponzoni
- first_name: Giovanni
  full_name: Zamborlini, Giovanni
  last_name: Zamborlini
- first_name: Clara Jody
  full_name: Saraceno, Clara Jody
  last_name: Saraceno
- first_name: Mirko
  full_name: Cinchetti, Mirko
  last_name: Cinchetti
citation:
  ama: Schiller KJ, Sternemann L, Stupar M, et al. Time-resolved momentum microscopy
    with fs-XUV photons at high repetition rates with flexible energy and time resolution.
    <i>Scientific Reports</i>. 2025;15(1). doi:<a href="https://doi.org/10.1038/s41598-025-86660-1">10.1038/s41598-025-86660-1</a>
  apa: Schiller, K. J., Sternemann, L., Stupar, M., Omar, A., Hoffmann, M., Nitschke,
    J. E., Mischke, V., Janas, D. M., Ponzoni, S., Zamborlini, G., Saraceno, C. J.,
    &#38; Cinchetti, M. (2025). Time-resolved momentum microscopy with fs-XUV photons
    at high repetition rates with flexible energy and time resolution. <i>Scientific
    Reports</i>, <i>15</i>(1), Article 3611. <a href="https://doi.org/10.1038/s41598-025-86660-1">https://doi.org/10.1038/s41598-025-86660-1</a>
  bibtex: '@article{Schiller_Sternemann_Stupar_Omar_Hoffmann_Nitschke_Mischke_Janas_Ponzoni_Zamborlini_et
    al._2025, title={Time-resolved momentum microscopy with fs-XUV photons at high
    repetition rates with flexible energy and time resolution}, volume={15}, DOI={<a
    href="https://doi.org/10.1038/s41598-025-86660-1">10.1038/s41598-025-86660-1</a>},
    number={13611}, journal={Scientific Reports}, publisher={Springer Science and
    Business Media LLC}, author={Schiller, Karl Jakob and Sternemann, Lasse and Stupar,
    Matija and Omar, Alan and Hoffmann, Martin and Nitschke, Jonah Elias and Mischke,
    Valentin and Janas, David Maximilian and Ponzoni, Stefano and Zamborlini, Giovanni
    and et al.}, year={2025} }'
  chicago: Schiller, Karl Jakob, Lasse Sternemann, Matija Stupar, Alan Omar, Martin
    Hoffmann, Jonah Elias Nitschke, Valentin Mischke, et al. “Time-Resolved Momentum
    Microscopy with Fs-XUV Photons at High Repetition Rates with Flexible Energy and
    Time Resolution.” <i>Scientific Reports</i> 15, no. 1 (2025). <a href="https://doi.org/10.1038/s41598-025-86660-1">https://doi.org/10.1038/s41598-025-86660-1</a>.
  ieee: 'K. J. Schiller <i>et al.</i>, “Time-resolved momentum microscopy with fs-XUV
    photons at high repetition rates with flexible energy and time resolution,” <i>Scientific
    Reports</i>, vol. 15, no. 1, Art. no. 3611, 2025, doi: <a href="https://doi.org/10.1038/s41598-025-86660-1">10.1038/s41598-025-86660-1</a>.'
  mla: Schiller, Karl Jakob, et al. “Time-Resolved Momentum Microscopy with Fs-XUV
    Photons at High Repetition Rates with Flexible Energy and Time Resolution.” <i>Scientific
    Reports</i>, vol. 15, no. 1, 3611, Springer Science and Business Media LLC, 2025,
    doi:<a href="https://doi.org/10.1038/s41598-025-86660-1">10.1038/s41598-025-86660-1</a>.
  short: K.J. Schiller, L. Sternemann, M. Stupar, A. Omar, M. Hoffmann, J.E. Nitschke,
    V. Mischke, D.M. Janas, S. Ponzoni, G. Zamborlini, C.J. Saraceno, M. Cinchetti,
    Scientific Reports 15 (2025).
date_created: 2025-11-04T07:47:28Z
date_updated: 2025-11-04T07:48:50Z
doi: 10.1038/s41598-025-86660-1
intvolume: '        15'
issue: '1'
language:
- iso: eng
project:
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '65'
  name: 'TRR 142; TP A08: Nichtlineare Kopplung von Zwischenschicht-Exzitonen in van
    der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten'
publication: Scientific Reports
publication_identifier:
  issn:
  - 2045-2322
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Time-resolved momentum microscopy with fs-XUV photons at high repetition rates
  with flexible energy and time resolution
type: journal_article
user_id: '30525'
volume: 15
year: '2025'
...