162 citations · 1.1k across the 43 of their papers we have counts for
61 papers
Studying electron beam coherence using plasmon interference
Evelijn Akerboom, F. Javier García de Abajo, Albert Polman
Energetic electrons create distinct cathodoluminescence (CL) angular distributions upon interaction with dielectric and plasmonic nanostructures, providing valuable information on…
Revealing time characteristics of optical excitations in dielectric and plasmonic structures through cathodoluminescence interferometry
Evelijn Akerboom, Hirohsi Sugimoto, Minoru Fujii +5
Cathodoluminescence (CL) spectroscopy provides access to optical excitations with nanometer spatial resolution, but direct time-resolved measurements of optical resonances remain c…
Determining Electron Beam Lateral Coherence in a Scanning Electron Microscope Using Electron Diffraction
Evelijn Akerboom, Fatemeh Kiani, Giulia Tagliabue +4
We develop and characterize scanning transmission electron microscopy (STEM) capabilities within a scanning electron microscope (SEM) to investigate the effective lateral coherence…
Unity-order coupling between free electrons and multiphoton waveguided Fock states
L. Prelat, S. Abdullah, C. I. Velasco +1
Electron beams enable highly localized near-field excitation of waveguided optical modes, yet their coupling is typically limited by short interaction times along straight-line tra…
Free-electron decoherence: Theory and applications
Cruz I. Velasco, Valerio Di Giulio, F. Javier García de Abajo
Electron microscopy relies on the spatial coherence of electron beams to generate atomic-scale images using interference and diffraction, which can be degraded by inelastic scatter…
Active steering of cathodoluminescence through a generalized Smith-Purcell effect
Eduardo J. C. Dias, Álvaro Rodríguez Echarri, Theis P. Rasmussen +2
Optical metasurfaces can shape the near fields of energetic electrons, enabling Smith-Purcell (SP) emission. We introduce a generalized SP effect relying on finite periodic arrays…