Berlin 2015 – scientific programme
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O: Fachverband Oberflächenphysik
O 84: Focus Session: Structural Dynamics in Nanoscale Materials Probed by Ultrashort Electron Pulses
O 84.5: Talk
Thursday, March 19, 2015, 16:15–16:30, MA 005
Deflection of Electron Pulses by THz Fields — •Waldemar Schneider1,2, Andrey Ryabov1,2, Daniel Kreier1,2, Ferenc Krausz1,2, and Peter Baum1,2 — 1Max-Planck-Institute of Quantum Optics — 2Ludwig-Maximilians-University Munich
Pump-probe electron diffraction and microscopy, based on laser excitation and probing with electrons, can provide a four-dimensional visualization of atomic motion in space and time. The time resolution is determined by the temporal and spatial structure of the electron pulse. Here, the temporal information of a single-electron pulse is mapped with THz fields into the transverse position on a screen, realising a THz-driven streaking camera. By spatially sectioning the electron pulse, spatial information was obtained. The deflection trace also revealed the shape of the THz-field at the sample.
The described approach represents a readily improvable method for temporal and spatial characterization of single-electron pulses for ultrafast diffraction applications.