Optical gating and streaking of free electrons with sub-optical cycle precision

Journal article

Publication Details

Author(s): Kozak M, McNeur J, Leedle K, Deng H, Schönenberger N, Ruehl A, Hartl I, Harris J, Byer R, Hommelhoff P
Journal: Nature Communications
Publication year: 2017
Volume: 8
ISSN: 2041-1723


The temporal resolution of ultrafast electron diffraction and microscopy experiments is currently limited by the available experimental techniques for the generation and characterization of electron bunches with single femtosecond or attosecond durations. Here, we present proof of principle experiments of an optical gating concept for free electrons via direct time-domain visualization of the sub-optical cycle energy and transverse momentum structure imprinted on the electron beam. We demonstrate a temporal resolution of 1.2 +/- 0.3 fs. The scheme is based on the synchronous interaction between electrons and the near-field mode of a dielectric nano-grating excited by a femtosecond laser pulse with an optical period duration of 6.5 fs. The sub-optical cycle resolution demonstrated here is promising for use in laser-driven streak cameras for attosecond temporal characterization of bunched particle beams as well as time-resolved experiments with free-electron beams.

FAU Authors / FAU Editors

Hommelhoff, Peter Prof. Dr.
Lehrstuhl für Laserphysik
Kozak, Martin
Lehrstuhl für Laserphysik
McNeur, Joshua
Lehrstuhl für Laserphysik
Schönenberger, Norbert
Lehrstuhl für Laserphysik

External institutions with authors

Deutsches Elektronen-Synchrotron DESY
Stanford University

How to cite

Kozak, M., McNeur, J., Leedle, K., Deng, H., Schönenberger, N., Ruehl, A.,... Hommelhoff, P. (2017). Optical gating and streaking of free electrons with sub-optical cycle precision. Nature Communications, 8. https://dx.doi.org/10.1038/ncomms14342

Kozak, Martin, et al. "Optical gating and streaking of free electrons with sub-optical cycle precision." Nature Communications 8 (2017).


Last updated on 2019-09-05 at 12:22