Terahertz oscilloscope for recording time information of ultrashort electron beams

Abstract

We propose and demonstrate a Terahertz (THz) oscilloscope for recording time information of an ultrashort electron beam. By injecting a laser-driven THz pulse with circular polarization into a dielectric tube, the electron beam is swept helically such that the time information is uniformly encoded into the angular distribution that allows one to characterize both the temporal profile and timing jitter of an electron beam. The dynamic range of the measurement in such a configuration is significantly increased compared to deflection with a linearly polarized THz pulse. With this THz oscilloscope, nearly 50-fold longitudinal compression of a relativistic electron beam to about 15 fs (rms) is directly visualized with its arrival time determined with 3 fs accuracy. This technique bridges the gap between streaking of photoelectrons with optical lasers and deflection of relativistic electron beams with radio-frequency deflectors, and should have wide applications in many ultrashort electron beam based facilities.

arXiv commentsubmitted to PRL

References in corpus (12)

• Single-cycle THz pulses with amplitudes exceeding 1 MV/cm generated by optical rectification in LiNbO3
• Terahertz-driven linear electron acceleration
• Dielectric Laser Acceleration
• Compression of sub-relativistic space-charge-dominated electron bunches for single-shot femtosecond electron diffraction
• Segmented Terahertz Electron Accelerator and Manipulator (STEAM)
• Direct measurement of sub-10 fs relativistic electron beams with ultralow emittance
• Relativistic electron beam acceleration in a zero-slippage terahertz-driven Inverse Free Electron Laser scheme
• Terahertz-based attosecond metrology of relativistic electron beams
• Terahertz streaking of few-femtosecond relativistic electron beams
• Demonstration of nonlinear-energy-spread compensation in relativistic electron bunches with corrugated structures
• Accelerator-based Single-shot Ultrafast Transmission Electron Microscope with Picosecond Temporal Resolution and Nanometer Spatial Resolution
• Electron-Terahertz Interaction in Dielectric-Lined Waveguide Structures for Electron Manipulation

Cited by in corpus (11)

• Acceleration of relativistic beams using laser-generated terahertz pulses
• Achieving 50 femtosecond resolution in MeV ultrafast electron diffraction with a double bend achromat compressor
• Femtosecond relativistic electron beam with reduced timing jitter from THz-driven beam compression
• Stable and scalable multistage terahertz-driven particle accelerator
• High-purity free-electron momentum states prepared by three-dimensional optical phase modulation
• Single-cycle optical control of beam electrons
• Parallel-Plate Waveguides for Terahertz-Driven MeV Electron Bunch Compression
• Non-invasive time-sorting in radio-frequency compressed ultrafast electron diffraction
• Free-electron tomography of few-cycle optical waveforms
• Ultrafast Electron Diffraction: Visualizing Dynamic States of Matter
• Visualizing femtosecond dynamics with ultrafast electron probes through terahertz compression and time-stamping