| Online-Ressource |
Verfasst von: | Heldt, Tobias [VerfasserIn]  |
| Oelmann, Jan-Hendrik [VerfasserIn]  |
| Guth, Lennart [VerfasserIn]  |
| Lackmann, Nick [VerfasserIn]  |
| Matt, Lukas [VerfasserIn]  |
| Pfeifer, Thomas [VerfasserIn]  |
| Crespo López-Urrutia, José Ramon [VerfasserIn]  |
Titel: | Nanometric probing with a femtosecond, intra-cavity standing wave |
Verf.angabe: | Tobias Heldt, Jan-Hendrik Oelmann, Lennart Guth, Nick Lackmann, Lukas Matt, Thomas Pfeifer and José R. Crespo López-Urrutia |
E-Jahr: | 2024 |
Jahr: | 28. November 2024 |
Umfang: | 8 S. |
Illustrationen: | Illustrationen |
Fussnoten: | Gesehen am 02.06.2025 |
Titel Quelle: | Enthalten in: Nanophotonics |
Ort Quelle: | Berlin : de Gruyter, 2012 |
Jahr Quelle: | 2024 |
Band/Heft Quelle: | 13(2024), 25, Seite 4639-4646 |
ISSN Quelle: | 2192-8614 |
Abstract: | Optical standing waves are intrinsically nanometric, spatially fixed interference-field patterns. At a commensurate scale, metallic nanotips serve as coherent, atomic-sized electron sources. Here, we explore the localized photofield emission from a tungsten nanotip with a transient standing wave. It is generated within an optical cavity with counter-propagating femtosecond pulses from a near-infrared, 100-MHz frequency comb. Shifting the phase of the standing wave at the tip reveals its nodes and anti-nodes through a strong periodic modulation of the emission current. We find the emission angles to be distinct from those of a traveling wave, and attribute this to the ensuing localization of emission from different crystallographic planes. Supported by a simulation, we find that the angle of maximum field enhancement is controlled by the phase of the standing wave. Intra-cavity nanotip interaction not only provides higher intensities than in free-space propagation, but also allows for structuring the light field even in the transverse direction by selection of high-order cavity modes. |
DOI: | doi:10.1515/nanoph-2024-0332 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
kostenfrei: Volltext: https://doi.org/10.1515/nanoph-2024-0332 |
| kostenfrei: Volltext: https://www.degruyterbrill.com/document/doi/10.1515/nanoph-2024-0332/html |
| DOI: https://doi.org/10.1515/nanoph-2024-0332 |
Datenträger: | Online-Ressource |
Sprache: | eng |
Sach-SW: | cavity |
| electron emission |
| nanotip |
| standing wave |
| strong-field |
| ultrafast |
K10plus-PPN: | 1927225272 |
Verknüpfungen: | → Zeitschrift |
Nanometric probing with a femtosecond, intra-cavity standing wave / Heldt, Tobias [VerfasserIn]; 28. November 2024 (Online-Ressource)