Journal Article

PUBDB-2025-01886

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Multi-pass cell driven multi-kHz dispersive wave emission of broadband deep-UV pulses

Silletti, L.Extern*CFEL* ; Wahid, A. B.DESY* ; Grigorova, T.Extern* ; Pratolli, L.Extern*CFEL* ; Ferreira de Oliveira e Silva, A.Extern*DESY* ; HERMELLIN, N.Extern*CFEL* ; Mullins, T.XFEL.EU*DESY* ; Trabattoni, A.DESY* ; Heyl, C.DESY* ; Brahms, C. ; Wanie, V.CFEL*DESY* ; Travers, J. C. ; Calegari, F. (Corresponding author)DESY*

2025
AIP Publishing Melville, NY

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Please use a persistent id in citations: doi:10.1063/5.0268188  doi:10.3204/PUBDB-2025-01886

Abstract: In the context of ultrafast spectroscopy, the availability of few-femtosecond UV pulses is key to disclose the role of electron dynamics in photo-activated biochemically-relevant processes. Here we present an optical setup for the generation of UV pulses spectrally tunable between 270 nm and 350 nm with Transform Limited durations of 3.0 fs and 2.9 fs, respectively, and repetition rates up to 50 kHz, using resonant dispersive wave (RDW) emission in an argon-filled hollow-core fiber (HCF). The RDW emission is driven by 1030 nm sub-20 fs pulses produced by post-compressing an Yb-based laser with a dispersion-engineered multi-pass cell (MPC). The combination of an MPC with a capillary constitutes a compact source to deliver few-femtosecond UV pulses at high-repetition rates, which is ideal for statistically demanding experiments in molecular physics.

Note: The article is not yet publishes but finalised. The publication needs to be paid. Link to invoice: https://aipauthors.ejpress.com/cgi-bin/prod.plex?jps_action=encoded_link&c_key=3e5VPidPWa8T2KnqUAXrcQ&token=BJGr0BdRo5Cf7Br0MoI6

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Contributing Institute(s):

1. Attosecond Science and Technology (FS-ATTO)
2. Photonics Research and Development (FS-PRI)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. Ex-Net-0002-Phase2-3 - Advanced Imaging of Matter: Structure, Dynamics and Control on the Atomic Scale - AIM (2018_Ex-Net-0002-Phase2-3) (2018_Ex-Net-0002-Phase2-3)
3. PHGS, VH-GS-500 - PIER Helmholtz Graduate School (2015_IFV-VH-GS-500) (2015_IFV-VH-GS-500)
4. HIRS-0018 - Helmholtz-Lund International School - Intelligent instrumentation for exploring matter at different time and length scales (HELIOS) (2020_HIRS-0018) (2020_HIRS-0018)
5. SoftMeter - Multi-messenger soft-field spectroscopy of molecular electronics at interfaces (101076500) (101076500)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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