Bright continuously-tunable VUV source for ultrafast spectroscopy
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2023
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866929206902915072 |
|---|---|
| author | Jurkovičová, Lucie Ltaief, Ltaief Ben Roos, Andreas Hult Hort, Ondřej Finke, Ondřej Albrecht, Martin Hoque, Ziaul Klimešová, Eva Sundaralingam, Akgash Antipenkov, Roman Grenfell, Annika Špaček, Alexandr Szuba, Wojciech Krikunova, Maria Mudrich, Marcel Nejdl, Jaroslav Andreasson, Jakob |
| author_facet | Jurkovičová, Lucie Ltaief, Ltaief Ben Roos, Andreas Hult Hort, Ondřej Finke, Ondřej Albrecht, Martin Hoque, Ziaul Klimešová, Eva Sundaralingam, Akgash Antipenkov, Roman Grenfell, Annika Špaček, Alexandr Szuba, Wojciech Krikunova, Maria Mudrich, Marcel Nejdl, Jaroslav Andreasson, Jakob |
| contents | Ultrafast electron dynamics drive phenomena such as photochemical reactions, catalysis, and light harvesting. To capture such dynamics in real-time, femtosecond to attosecond light sources are extensively used. However, an exact match between the excitation photon energy and a characteristic resonance is crucial. High-harmonic generation sources are exceptional in terms of pulse duration but limited in spectral tunability in the VUV range. Here, we present a monochromatic femtosecond source continuously tunable around 21 eV photon energy utilizing the second harmonic of an OPCPA laser system to drive high-harmonic generation. The unique tunability of the source is verified in an experiment probing the interatomic Coulombic decay in doped He nanodroplets across the He absorption bands. Moreover, we achieved intensities sufficient for driving non-linear processes using a tight focusing of the VUV beam. We demonstrated it on the observation of collective autoionization of multiply excited pure He nanodroplets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2301_10508 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Bright continuously-tunable VUV source for ultrafast spectroscopy Jurkovičová, Lucie Ltaief, Ltaief Ben Roos, Andreas Hult Hort, Ondřej Finke, Ondřej Albrecht, Martin Hoque, Ziaul Klimešová, Eva Sundaralingam, Akgash Antipenkov, Roman Grenfell, Annika Špaček, Alexandr Szuba, Wojciech Krikunova, Maria Mudrich, Marcel Nejdl, Jaroslav Andreasson, Jakob Atomic Physics Atomic and Molecular Clusters Optics Ultrafast electron dynamics drive phenomena such as photochemical reactions, catalysis, and light harvesting. To capture such dynamics in real-time, femtosecond to attosecond light sources are extensively used. However, an exact match between the excitation photon energy and a characteristic resonance is crucial. High-harmonic generation sources are exceptional in terms of pulse duration but limited in spectral tunability in the VUV range. Here, we present a monochromatic femtosecond source continuously tunable around 21 eV photon energy utilizing the second harmonic of an OPCPA laser system to drive high-harmonic generation. The unique tunability of the source is verified in an experiment probing the interatomic Coulombic decay in doped He nanodroplets across the He absorption bands. Moreover, we achieved intensities sufficient for driving non-linear processes using a tight focusing of the VUV beam. We demonstrated it on the observation of collective autoionization of multiply excited pure He nanodroplets. |
| title | Bright continuously-tunable VUV source for ultrafast spectroscopy |
| topic | Atomic Physics Atomic and Molecular Clusters Optics |
| url | https://arxiv.org/abs/2301.10508 |