| DOI | Trouver le DOI : https://doi.org/10.1038/nphys4087 |
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| Auteur | Rechercher : Vampa, G.1; Rechercher : Ghamsari, B. G.; Rechercher : Siadat Mousavi, S.; Rechercher : Hammond, T. J.1; Rechercher : Olivieri, A.; Rechercher : Lisicka-Skrek, E.; Rechercher : Naumov, A. Yu1; Rechercher : Villeneuve, D. M.1; Rechercher : Staudte, A.1; Rechercher : Berini, P.; Rechercher : Corkum, P. B.1 |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Format | Texte, Article |
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| Résumé | Plasmonic antennas can enhance the intensity of a nanojoule laser pulse by localizing the electric field in their proximity. It has been proposed that the field can become strong enough to convert the fundamental laser frequency into high-order harmonics through an extremely nonlinear interaction with gas atoms that occupy the nanoscopic volume surrounding the antennas. However, the small number of gas atoms that can occupy this volume limits the generation of high harmonics. Here we use an array of monopole nano-antennas to demonstrate plasmon-assisted high-harmonic generation directly from the supporting crystalline silicon substrate. The high density of the substrate compared with a gas allows macroscopic buildup of harmonic emission. Despite the sparse coverage of antennas on the surface, harmonic emission is ten times brighter than without antennas. Imaging the high-harmonic radiation will allow nanometre and attosecond measurement of the plasmonic field8 thereby enabling more sensitive plasmon sensors while opening a new path to extreme-ultraviolet-frequency combs. |
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| Date de publication | 2017-04-03 |
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| Maison d’édition | Nature Publishing Group |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 23003270 |
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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 | b85307e0-9cf6-44ce-b661-f931fd2ab493 |
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| Enregistrement créé | 2018-05-10 |
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| Enregistrement modifié | 2020-03-16 |
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