Optical excitations with electron beams: Challenges and opportunities

FJ Garcia de Abajo, V Di Giulio - ACS photonics, 2021 - ACS Publications
Free electron beams such as those employed in electron microscopes have evolved into
powerful tools to investigate photonic nanostructures with an unrivaled combination of …

Attosecond electron-beam technology: a review of recent progress

Y Morimoto - Microscopy, 2023 - academic.oup.com
Electron microscopy and diffraction with ultrashort pulsed electron beams are capable of
imaging transient phenomena with the combined ultrafast temporal and atomic-scale spatial …

Transverse electron-beam shaping with light

MC Chirita Mihaila, P Weber, M Schneller, L Grandits… - Physical Review X, 2022 - APS
Interfacing electrons and light enables ultrafast electron microscopy and quantum control of
electrons, as well as new optical elements for high-sensitivity imaging. Here, we …

Optical modulation of electron beams in free space

FJ García de Abajo, A Konečná - Physical Review Letters, 2021 - APS
We exploit free-space interactions between electron beams and tailored light fields to imprint
on-demand phase profiles on the electron wave functions. Through rigorous semiclassical …

Electron vortex beams for chirality probing at the nanoscale

NL Streshkova, P Koutenský, M Kozák - Physical Review Applied, 2024 - APS
In this work we propose a method for probing the chirality of nanoscale electromagnetic near
fields utilizing the properties of a coherent superposition of free-electron vortex states in …

[HTML][HTML] High-power near-concentric Fabry–Perot cavity for phase contrast electron microscopy

C Turnbaugh, JJ Axelrod, SL Campbell… - Review of scientific …, 2021 - pubs.aip.org
Transmission electron microscopy (TEM) of vitrified biological macromolecules (cryo-EM) is
limited by the weak phase contrast signal that is available from such samples. Using a …

Modern approaches to improving phase contrast electron microscopy

JJ Axelrod, JT Zhang, PN Petrov, RM Glaeser… - Current Opinion in …, 2024 - Elsevier
Although defocus can be used to generate partial phase contrast in transmission electron
microscope images, cryo-electron microscopy (cryo-EM) can be further improved by the …

Free-space optical modulation of free electrons in the continuous-wave regime

CI Velasco, F de Abajo - arXiv preprint arXiv:2412.03410, 2024 - arxiv.org
The coherent interaction between free electrons and optical fields can produce free-electron
compression and push the temporal resolution of ultrafast electron microscopy to the …

Overcoming resolution loss due to thermal magnetic field fluctuations from phase plates in transmission electron microscopy

JJ Axelrod, PN Petrov, JT Zhang, J Remis, B Buijsse… - Ultramicroscopy, 2023 - Elsevier
We identify thermal magnetic field fluctuations, caused by thermal electron motion (“Johnson
noise”) in electrically conductive materials, as a potential resolution limit in transmission …

Dynamics of a buffer-gas-loaded, deep optical trap for molecules

A Singh, L Maisenbacher, Z Lin, JJ Axelrod… - Physical Review …, 2023 - APS
We describe an approach to optically trapping small, chemically stable molecules at
cryogenic temperatures by buffer-gas loading a deep optical dipole trap. The∼ 10 K trap …