The use of pump-probe experiments to study complex transient events has been an area of
significant interest in materials science, biology, and chemistry. While the emphasis has …

Real-time imaging of countless femtosecond dynamics requires extreme speeds orders of
magnitude beyond the limits of electronic sensors. Existing femtosecond imaging modalities …

The recent interest in ultrafast diffraction has been stimulated by the potential of the
technique to provide a complete, global picture of structural dynamics on the femtosecond …

Significance Compressed ultrafast photography (CUP) is currently the world's fastest single-
shot imaging technique. Through the integration of compressed sensing and streak imaging …

In this paper, we present experimental results on the effect of space charging in
photoelectron spectroscopy from a surface using a pulsed and intense femtosecond light …

We have developed a femtosecond electron diffraction system capable of directly measuring
the complete transient structures with atomic level detail and on 400-fs time scale in solid …

Understanding space charge effects is central for the development of high-brightness
ultrafast electron diffraction and microscopy techniques for imaging material transformation …

Ultrafast electron diffraction (UED) relies on short, intense pulses of electrons, which
because of Coulombic repulsion will expand and change shape as they propagate. While …

The construction of a pulsed electron gun for ultrafast reflection high-energy electron
diffraction experiments at surfaces is reported. Special emphasis is placed on the …

We report a systematic measurement of the space charge effect observed in the few-
picosecond laser pulse regime in laser-based solid-state photoemission spectroscopy …