Nanoscale focused ion beams (FIBs) represent one of the most useful tools in
nanotechnology, enabling nanofabrication via milling and gas-assisted deposition …

Ultrafast electron diffraction and microscopy can provide a four-dimensional visualization of
atomic motion in space and time, but space charge effects limit the temporal resolution. In …

With the development of ultrafast electron and X-ray sources it is becoming possible to study
structural dynamics with atomic-level spatial and temporal resolution. Because of their short …

We present the first observation of subpicosecond electron bunches from an ultracold
electron source. This source is based on near-threshold, two-step, femtosecond …

We present a nano-scale photoelectron source, optimized for ultrashort pulse durations and
well-suited for time-resolved diffraction and advanced laser acceleration experiments. A …

Based on a structure consisting of a single graphene layer situated on periodic dielectric
gratings, we show theoretically that terahertz radiation can be generated by low-energy …

Compact x-ray sources offering high-brightness radiation for advanced imaging applications
are highly desired. We investigate, analytically and numerically, the photon yield of …

The ultrafast and ultracold electron source, based on near-threshold photoionization of a
laser-cooled and trapped atomic gas, offers a unique combination of low transverse beam …

The diffract-before-destroy method, using 50-to 100-fs x-ray pulses from a free-electron
laser, was designed to determine the three-dimensional structure of biological …

Understanding strong-field ionization requires a quantitative comparison between
experimental data and theoretical models which is notoriously difficult to achieve. Optically …