Guardado en:
| Autores principales: | , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2411.11769 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866909394565857280 |
|---|---|
| author | Andrade, José R. C. Kretschmar, Martin Danylo, Rostyslav Carlström, Stefanos Witting, Tobias Mermillod-Blondin, Alexandre Patchkovskii, Serguei Ivanov, Misha Yu Vrakking, Marc J. J. Rouzée, Arnaud Nagy, Tamas |
| author_facet | Andrade, José R. C. Kretschmar, Martin Danylo, Rostyslav Carlström, Stefanos Witting, Tobias Mermillod-Blondin, Alexandre Patchkovskii, Serguei Ivanov, Misha Yu Vrakking, Marc J. J. Rouzée, Arnaud Nagy, Tamas |
| contents | In the last few decades the development of ultrafast lasers has revolutionized our ability to gain insight into light-matter interactions. The appearance of few-cycle light sources available from the visible to the mid-infrared spectral range and the development of attosecond extreme ultraviolet and x-ray technologies provide for the first time the possibility to directly observe and control ultrafast electron dynamics in matter on their natural time scale. However, few-fs sources have hardly been available in the deep ultraviolet (DUV; 4-6 eV, 300-200 nm) and are unavailable in the vacuum ultraviolet (VUV; 6-12 eV, 200-100 nm) spectral range, corresponding to the photon energies required for valence excitation of atoms and molecules. Here, we generate VUV pulses with $μ$J energy tunable between 160 and 190 nm via resonant dispersive wave emission during soliton self-compression in a capillary. We fully characterize the pulses in situ using frequency-resolved optical gating based on two-photon photoionization in noble gases. The measurements reveal that in most of the cases the pulses are shorter than 3 fs. These findings unlock the potential to investigate ultrafast electron dynamics with a time-resolution that has been hitherto inaccessible when using VUV pulses. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_11769 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | High-energy, few-cycle light pulses tunable across the vacuum ultraviolet Andrade, José R. C. Kretschmar, Martin Danylo, Rostyslav Carlström, Stefanos Witting, Tobias Mermillod-Blondin, Alexandre Patchkovskii, Serguei Ivanov, Misha Yu Vrakking, Marc J. J. Rouzée, Arnaud Nagy, Tamas Optics In the last few decades the development of ultrafast lasers has revolutionized our ability to gain insight into light-matter interactions. The appearance of few-cycle light sources available from the visible to the mid-infrared spectral range and the development of attosecond extreme ultraviolet and x-ray technologies provide for the first time the possibility to directly observe and control ultrafast electron dynamics in matter on their natural time scale. However, few-fs sources have hardly been available in the deep ultraviolet (DUV; 4-6 eV, 300-200 nm) and are unavailable in the vacuum ultraviolet (VUV; 6-12 eV, 200-100 nm) spectral range, corresponding to the photon energies required for valence excitation of atoms and molecules. Here, we generate VUV pulses with $μ$J energy tunable between 160 and 190 nm via resonant dispersive wave emission during soliton self-compression in a capillary. We fully characterize the pulses in situ using frequency-resolved optical gating based on two-photon photoionization in noble gases. The measurements reveal that in most of the cases the pulses are shorter than 3 fs. These findings unlock the potential to investigate ultrafast electron dynamics with a time-resolution that has been hitherto inaccessible when using VUV pulses. |
| title | High-energy, few-cycle light pulses tunable across the vacuum ultraviolet |
| topic | Optics |
| url | https://arxiv.org/abs/2411.11769 |