2.1k citations · 9.1k across the 86 of their papers we have counts for
87 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…
Electrically driven plasmon-polaritonic bistability in Dirac electron tunneling transistors
Shuai Zhang, Yang Xu, Junhe Zhang +12
Bistability-two distinct stable states under identical parameter-is not only a fundamental physical concept but also of importance in practical applications. While plasmon-polarito…
Fostering cultural change in research through innovative knowledge sharing, evaluation, and community engagement strategies
Junsuk Rho, Jinn-Kong Sheu, Andrew Forbes +30
Bringing together researchers, funders, industry partners, and publishers from 14 countries across 5 continents, we advance the debate around open-science, assessment and learning.…
Free-electron coupling to surface polaritons mediated by small scatterers
Leila Prelat, Eduardo J. C. Dias, F. Javier García de Abajo
The ability of surface polaritons (SPs) to enhance and manipulate light fields down to deep-subwavelength length scales enables applications in optical sensing and nonlinear optics…
Probing Plexciton Emission from 2D Materials on Gold Nanotrenches
Junze Zhou, P. A. D. Gonçalves, Fabrizio Riminucci +5
Probing strongly coupled quasiparticle excitations at their intrinsic length scales offers unique insights into their properties and facilitates the design of devices with novel fu…
Toward Optimum Coupling between Free Electrons and Confined Optical Modes
Valerio Di Giulio, Evelijn Akerboom, Albert Polman +1
Free electrons are unique tools to probe and manipulate nanoscale optical fields with emerging applications in ultrafast spectromicroscopy and quantum metrology. However, advances…
Thermal radiation forces on planar structures with asymmetric optical response
Juan R. Deop-Ruano, F. Javier García de Abajo, Alejandro Manjavacas
Light carries momentum and, upon interaction with material structures, can exert forces on them. Here, we show that a planar structure with asymmetric optical response is spontaneo…
Quantum effects in the interaction of low-energy electrons with light
Adamantios P. Synanidis, P. A. D. Gonçalves, Claus Ropers +1
The interaction between free electrons and nanoscale optical fields has emerged as a unique platform to investigate ultrafast processes in matter and explore fundamental quantum ph…
Guiding light with surface exciton-polaritons in atomically thin superlattices
Sara A. Elrafei, T. V. Raziman, Sandra de Vega +2
Two-dimensional materials give access to the ultimate physical limits of Photonics with appealing properties for ultracompact optical components such as waveguides and modulators.…
Generation of entangled waveguided photon pairs by free electrons
Theis P. Rasmussen, Álvaro Rodríguez Echarri, Joel D. Cox +1
Entangled photon pairs are a key resource in future quantum-optical communication and information technologies. While high-power laser light propagating in bulk nonlinear optical c…
Engineering 2D material exciton lineshape with graphene/h-BN encapsulation
Steffi Y. Woo, Fuhui Shao, Ashish Arora +20
Control over the optical properties of atomically thin two-dimensional (2D) layers, including those of transition metal dichalcogenides (TMDs), is needed for future optoelectronic…
Quantum-mechanical effects in photoluminescence from thin crystalline gold films
Alan R. Bowman, Álvaro Rodríguez Echarri, Fatemeh Kiani +6
Luminescence constitutes a unique source of insight into hot carrier processes in metals, including those in plasmonic nanostructures used for sensing and energy applications. Howe…
Radiative loss of coherence in free electrons: a long-range quantum phenomenon
Cruz I. Velasco, Valerio Di Giulio, F. Javier García de Abajo
Quantum physics rules the dynamics of small objects as they interact over microscopic length scales. Nevertheless, quantum correlations involving macroscopic distances can be obser…
Multi-plasmon effects and plasmon satellites in photoemission from nanostructures
P. A. D. Gonçalves, F. Javier García de Abajo
Plasmons can be excited during photoemission and produce spectral photoelectron features that yield information on the nanoscale optical response of the probed materials. However,…
Ultraconfined plasmons in atomically thin crystalline silver nanostructures
Vahagn Mkhitaryan, Andrew P. Weber, Saad Abdullah +8
The ability to confine light down to atomic scales is critical for the development of applications in optoelectronics and optical sensing as well as for the exploration of nanoscal…
Generation and control of localized terahertz fields in photoemitted electron plasmas
Eduardo J. C. Dias, I. Madan, S. Gargiulo +6
Dense micron-sized electron plasmas, such as those generated upon irradiation of nanostructured metallic surfaces by intense femtosecond laser pulses, constitute a rich playground…
Interrogating Quantum Nonlocal Effects in Nanoplasmonics through Electron-Beam Spectroscopy
P. A. D. Gonçalves, F. Javier García de Abajo
A rigorous account of quantum nonlocal effects is paramount for understanding the optical response of metal nanostructures and for designing plasmonic devices at the nanoscale. Her…
Nanophotonics for pair production
Valerio Di Giulio, F. Javier García de Abajo
The transformation of electromagnetic energy into matter represents a fascinating prediction of relativistic quantum electrodynamics that is paradigmatically exemplified by the cre…
eV electron spectromicroscopy using free-space light
Yves Auad, Eduardo J. C. Dias, Marcel Tencé +7
The synergy between free electrons and light has recently been leveraged to reach an impressive degree of simultaneous spatial and spectral resolution, enabling applications in mic…