Skip to main content
. Author manuscript; available in PMC: 2018 Oct 2.
Published in final edited form as: Nat Photonics. 2018 Apr 2;12(6):336–342. doi: 10.1038/s41566-018-0138-z

Fig. 4. Terahertz-driven electron pulse compression.

Fig. 4

a, Measured temporal profiles of the electron pulses as the THz field in the buncher is increased (red arrow). The red lines represent Gaussian fits. b, Black squares: measured electron bunch FWHM duration versus incident THz field strength. Red line: corresponding simulation results. Inset: the electron beam spatial profile on the detector at the optimal compressed condition. c, Simulated bunch length vs position. Inset: longitudinal phase-space distribution before the rebunching cavity, after the rebunching cavity and maximally compressed position marked with red dots respectively. This demonstration was performed with the Yb:KYW laser using one STEAM-device as a rebunching cavity and one as electron streak camera with a bunch charge of ~1 fC.