Femtosecond few- to single-electron point-projection microscopy for nanoscale dynamic imaging
Femtosecond few- to single-electron point-projection microscopy for nanoscale dynamic imaging
Femtosecond electron microscopy produces real-space images of matter in a series of ultrafast snapshots. Pulses of electrons self-disperse under space-charge broadening, so without compression, the ideal operation mode is a single electron per pulse. Here, we demonstrate femtosecond single-electron point projection microscopy (fs-ePPM) in a laser-pump fs-e-probe configuration. The electrons …