| Téléchargement | - Voir la version finale : Role of spin-orbit coupling in high-order harmonic generation revealed by supercycle Rydberg trajectories (PDF, 1.6 Mio)
- Voir les données supplémentaires : Role of spin-orbit coupling in high-order harmonic generation revealed by supercycle Rydberg trajectories (PDF, 107 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevLett.129.173202 |
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| Auteur | Rechercher : Mayer, N.Identifiant ORCID : https://orcid.org/0000-0002-8547-0073; Rechercher : Beaulieu, S.Identifiant ORCID : https://orcid.org/0000-0003-2316-2224; Rechercher : Jiménez-Galán, Á.1Identifiant ORCID : https://orcid.org/0000-0003-2116-7187; Rechercher : Patchkovskii, S.; Rechercher : Kornilov, O.; Rechercher : Descamps, D.Identifiant ORCID : https://orcid.org/0000-0003-0474-0551; Rechercher : Petit, S.; Rechercher : Smirnova, O.; Rechercher : Mairesse, Y.Identifiant ORCID : https://orcid.org/0000-0002-9098-7421; Rechercher : Ivanov, M. Y. |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Bailleur de fonds | Rechercher : H2020 Marie Skłodowska-Curie Actions; Rechercher : H2020 European Research Council; Rechercher : Agence Nationale de la Recherche; Rechercher : Deutsche Forschungsgemeinschaft |
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| Format | Texte, Article |
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| Résumé | High-harmonic generation is typically thought of as a sub-laser-cycle process, with the electron’s excursion in the continuum lasting a fraction of the optical cycle. However, it was recently suggested that long-lived Rydberg states can play a particularly important role in high harmonic generation by atoms driven by the combination of the counterrotating circularly polarized fundamental light field and its second harmonic. Here we report direct experimental evidence of very long and stable Rydberg trajectories contributing to high-harmonic generation in such fields. We track their dynamics inside the laser pulse using the spin-orbit evolution in the ionic core, utilizing the spin-orbit Larmor clock. We confirm their effect on harmonic emission both via microscopic simulations and by showing how this radiation can lead to a well-collimated macroscopic far-field signal. Our observations contrast sharply with the general view that long-lived Rydberg orbits should generate negligible contribution to the macroscopic far-field high harmonic response of the medium. |
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| Date de publication | 2022-10-18 |
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| Maison d’édition | American Physical Society |
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| Dans | |
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| Autre version | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 0203388c-41dc-44c3-a686-49a10b423808 |
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| Enregistrement créé | 2024-01-18 |
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| Enregistrement modifié | 2024-02-02 |
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