Linear-accelerator-based applications like x-ray free electron lasers, ultrafast electron
diffraction, electron beam cooling, and energy recovery linacs use photoemission-based …

Ultra-flat, ultra-thin alkali antimonide photocathodes with high crystallinity can exhibit high
quantum efficiency and low mean transverse energy of outgoing electrons, which are …

Alkali antimonide semiconductor photocathodes provide a promising platform for the
generation of high-brightness electron beams, which are necessary for the development of …

In this Letter we demonstrate the use of plasmonic focusing in conjunction with nonlinear
photoemission to develop geometrically flat nanoscale electron sources with less than 40 …

The mean transverse energy (MTE) of electrons emitted from cathodes is a critical parameter
that determines the brightness of electron beams for applications, such as x-ray free electron …

Novel photocathode materials like ordered surfaces of single crystal metals, epitaxially
grown high quantum efficiency thin films, and topologically non-trivial materials with dirac …

The study of the fundamental properties of alkali antimonide photocathodes for particle
accelerators is currently hindered by the limited purity of the samples. First‐principles …

The next generation of free electron lasers will be the first to see the performance of the laser
strongly dependent on the material properties of the photocathode. A new injector proposed …

Photocathodes are routinely used as a source of electrons in high brightness beam
photoinjectors. The properties of the photocathode have a significant influence on the …

We report on the novel use of a Cs+ ion gun for an ion-beam-assisted molecular-beam-
epitaxy (IBA-MBE) method to sequentially deposit Cs-Sb cathodes on room temperature …