Articles producció científica> Química Física i Inorgànica

Spontaneous and stimulated electron-photon interactions in nanoscale plasmonic near fields

  • Datos identificativos

    Identificador: imarina:9207260
    Autores:
    Liebtrau, MatthiasSivis, MuratFeist, ArminLourenco-Martins, HugoPazos-Perez, NicolasAlvarez-Puebla, Ramon A.Garcia de Abajo, F. JavierPolman, AlbertRopers, Claus
    Resumen:
    The interplay between free electrons, light, and matter offers unique prospects for space, time, and energy resolved optical material characterization, structured light generation, and quantum information processing. Here, we study the nanoscale features of spontaneous and stimulated electron-photon interactions mediated by localized surface plasmon resonances at the tips of a gold nanostar using electron energy-loss spectroscopy (EELS), cathodoluminescence spectroscopy (CL), and photon-induced near-field electron microscopy (PINEM). Supported by numerical electromagnetic boundary-element method (BEM) calculations, we show that the different coupling mechanisms probed by EELS, CL, and PINEM feature the same spatial dependence on the electric field distribution of the tip modes. However, the electron-photon interaction strength is found to vary with the incident electron velocity, as determined by the spatial Fourier transform of the electric near-field component parallel to the electron trajectory. For the tightly confined plasmonic tip resonances, our calculations suggest an optimum coupling velocity at electron energies as low as a few keV. Our results are discussed in the context of more complex geometries supporting multiple modes with spatial and spectral overlap. We provide fundamental insights into spontaneous and stimulated electron-light-matter interactions with key implications for research on (quantum) coherent optical phenomena at the nanoscale.
  • Otros:

    Autor según el artículo: Liebtrau, Matthias; Sivis, Murat; Feist, Armin; Lourenco-Martins, Hugo; Pazos-Perez, Nicolas; Alvarez-Puebla, Ramon A.; Garcia de Abajo, F. Javier; Polman, Albert; Ropers, Claus;
    Departamento: Química Física i Inorgànica
    Autor/es de la URV: Alvarez Puebla, Ramon Angel / Pazos Pérez, Nicolás Carlos
    Palabras clave: Surface plasmon resonance Spatial fourier transform Sailing vessels Quantum-information processing Plasmons Photons Numerical methods Nanotechnology Material characterizations Localized surface plasmon resonance Light-matter interactions Gold metallography Energy dissipation Electrons Electron trajectories Electron scattering Electron energy loss spectroscopy Electron emission Electric fields Electric field distributions Dissociation Cathodoluminescence spectroscopy Boundary element method
    Resumen: The interplay between free electrons, light, and matter offers unique prospects for space, time, and energy resolved optical material characterization, structured light generation, and quantum information processing. Here, we study the nanoscale features of spontaneous and stimulated electron-photon interactions mediated by localized surface plasmon resonances at the tips of a gold nanostar using electron energy-loss spectroscopy (EELS), cathodoluminescence spectroscopy (CL), and photon-induced near-field electron microscopy (PINEM). Supported by numerical electromagnetic boundary-element method (BEM) calculations, we show that the different coupling mechanisms probed by EELS, CL, and PINEM feature the same spatial dependence on the electric field distribution of the tip modes. However, the electron-photon interaction strength is found to vary with the incident electron velocity, as determined by the spatial Fourier transform of the electric near-field component parallel to the electron trajectory. For the tightly confined plasmonic tip resonances, our calculations suggest an optimum coupling velocity at electron energies as low as a few keV. Our results are discussed in the context of more complex geometries supporting multiple modes with spatial and spectral overlap. We provide fundamental insights into spontaneous and stimulated electron-light-matter interactions with key implications for research on (quantum) coherent optical phenomena at the nanoscale.
    Áreas temáticas: Optics Electronic, optical and magnetic materials Ciência da computação Atomic and molecular physics, and optics
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: ramon.alvarez@urv.cat nicolas.pazos@urv.cat
    Identificador del autor: 0000-0003-4770-5756 0000-0002-2326-4231
    Fecha de alta del registro: 2024-07-27
    Volumen de revista: 10
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://www.nature.com/articles/s41377-021-00511-y
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Light-Science & Applications. 10 (1):
    Referencia de l'ítem segons les normes APA: Liebtrau, Matthias; Sivis, Murat; Feist, Armin; Lourenco-Martins, Hugo; Pazos-Perez, Nicolas; Alvarez-Puebla, Ramon A.; Garcia de Abajo, F. Javier; Po (2021). Spontaneous and stimulated electron-photon interactions in nanoscale plasmonic near fields. Light-Science & Applications, 10(1), -. DOI: 10.1038/s41377-021-00511-y
    DOI del artículo: 10.1038/s41377-021-00511-y
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2021
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Optics
    Surface plasmon resonance
    Spatial fourier transform
    Sailing vessels
    Quantum-information processing
    Plasmons
    Photons
    Numerical methods
    Nanotechnology
    Material characterizations
    Localized surface plasmon resonance
    Light-matter interactions
    Gold metallography
    Energy dissipation
    Electrons
    Electron trajectories
    Electron scattering
    Electron energy loss spectroscopy
    Electron emission
    Electric fields
    Electric field distributions
    Dissociation
    Cathodoluminescence spectroscopy
    Boundary element method
    Optics
    Electronic, optical and magnetic materials
    Ciência da computação
    Atomic and molecular physics, and optics
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