Author: Li, R.K.
Paper Title Page
Terahertz-Based Sub-femtosecond Metrology of Relativistic Electron Beams  
  • R.K. Li
    TUB, Beijing, People’s Republic of China
  High brightness, ultrashort electron beams are driving various advanced scientific instruments. As we push the limits of electron beams in the time domain, the challenges include not only generating the shortest possible pulse durations, but also precisely controlling or characterizing the timing of electron beams relative to optical pulses. The optical pulses can be for example the pump laser in ultrafast electron diffraction, or the drive laser in external-injection laser plasma accelerators, etc. It is not feasible to characterize the timing between electron and laser pulses to fs level using an rf-based approach, due to the phase jitter of rf sources relative to lasers. With a laser-generated THz streaking field, the timing of electron beams can be determined at sub-fs level and the pulse duration at single fs level on a shot-by-shot basis. Showing that THz compression can significantly reduce the pulse duration and intrinsically stabilize the timing jitter of electron beams. We believe that time-domain manipulation of relativistic electron beams using laser-generated THz can significantly boost the performance of electron beam-based instruments for ultrafast science.  
slides icon Slides TUCO01 [19.114 MB]  
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