A flexible beamline combining XUV attosecond pulses with few-femtosecond UV and near-infrared pulses for time-resolved experiments
We describe a beamline where few-femtosecond ultraviolet (UV) pulses are generated and synchronized to few-cycle near-infrared (NIR) and extreme ultraviolet (XUV) attosecond pulses. The UV light is obtained via third-harmonic generation in argon or neon gas when focusing a phase-stabilized NIR driving field inside a glass cell that was designed to support high pressures for enhanced conversion efficiency. A recirculation system allows reducing the large gas consumption required for the nonlinear process. Isolated attosecond pulses are generated using the polarization gating technique, and the photon spectrometer employed to characterize the XUV radiation consists of a new design based on the combination of a spherical varied-line-space grating and a cylindrical mirror. This design allows for compactness while providing a long entrance arm for integrating different experimental chambers. The entire interferometer is built under vacuum to prevent both absorption of the XUV light and dispersion of the UV pulses, and it is actively stabilized to ensure an attosecond delay stability during experiments. This table-top source has been realized with the aim of investigating UV-induced electron dynamics in neutral states of bio-relevant molecules, but it also offers the possibility to implement a manifold of novel time-resolved experiments based on photo-ionization/excitation of gaseous and liquid targets by ultraviolet radiation. UV pump-XUV probe measurements in ethyl-iodide showcase the capabilities of the attosecond beamline.
Authors
- Fabio Frassetto (ORCID: https://orcid.org/0000-0001-5528-1995)
- Diogo Lopes (ORCID: https://orcid.org/0000-0002-1087-9990)
- Mara Galli (ORCID: https://orcid.org/0000-0002-8142-4651)
- M. Nisoli (ORCID: https://orcid.org/0000-0003-2309-732X)
- François Légaré (ORCID: https://orcid.org/0000-0002-3065-7156)
- Ammar Bin Wahid (ORCID: https://orcid.org/0000-0003-0460-7072)
- Lorenzo Colaizzi (ORCID: https://orcid.org/0000-0001-6693-5675)
- Krishna Saraswathula
- Erik P. Månsson (ORCID: https://orcid.org/0000-0003-3567-2985)
- Sergey Ryabchuk (ORCID: https://orcid.org/0000-0003-0210-9256)
- Luca Poletto (ORCID: https://orcid.org/0000-0002-0914-0531)
- Andrea Cartella (ORCID: https://orcid.org/0009-0007-7801-4006)
- Andrea Trabattoni (ORCID: https://orcid.org/0000-0002-0187-9075)
- Roberto Osellame (ORCID: https://orcid.org/0000-0002-4457-9902)
- Vincent Wanie (ORCID: https://orcid.org/0000-0001-8274-4617)
- Francesca Calegari (ORCID: https://orcid.org/0000-0003-3234-7298)
- Rebeca Martìnez Vàzquez (ORCID: https://orcid.org/0000-0001-8728-5819)
- Josina Hahne
Institutions
- Leibniz University Hannover (DE)
- Universität Hamburg (DE)
- Deutsches Elektronen-Synchrotron DESY (DE)
- Institut National de la Recherche Scientifique (CA)
- Center for Biomolecular Nanotechnologies (IT)
- Center for Free-Electron Laser Science (DE)
- Max Planck Institute for the Structure and Dynamics of Matter (DE)
- Hamburg Centre for Ultrafast Imaging
- Politecnico di Milano (IT)
Publication Details
- Journal
- Review of Scientific Instruments
- Published
- 2024-08-01
- DOI
- https://doi.org/10.1063/5.0190889
- Citations
- 9
- Primary Topic
- Laser-Matter Interactions and Applications
- Type
- article
- Field-Weighted Citation Impact
- 3.04
Funders
- Deutsche Forschungsgemeinschaft
- Natural Sciences and Engineering Research Council of Canada
- European Research Council