Plasma photonic spatiotemporal synchronization of relativistic electron and laser beams

P. Scherkl, A. Knetsch, T. Heinemann, A. Sutherland, A. F. Habib, O. S. Karger, D. Ullmann, A. Beaton, G. G. Manahan, Y. Xi, A. Deng, M. D. Litos, B. D. O'Shea, S. Z. Green, C. I. Clarke, G. Andonian, R. Assmann, D. L. Bruhwiler, J. Smith, J. R. CaryM. J. Hogan, V. Yakimenko, J. B. Rosenzweig, B. Hidding

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
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We present an ultracompact plasma-based method to measure spatial and temporal concurrence of intense electron and laser beams nonintrusively at their interaction point. The electron beam couples with a laser-generated seed plasma in dependence of spatiotemporal overlap, which triggers additional plasma production and manifests as enhanced plasma afterglow. This optical observable is exploited to measure beam concurrence with ∼4 μm spatial and ∼26.7 fs temporal accuracy, supported by auxiliary diagnostics. The afterglow interaction fingerprint is highly sensitive and enables ultraversatile femtosecond-micrometer beam metrology.

Original languageEnglish
Article number052803
Number of pages7
JournalPhysical Review Accelerators and Beams
Issue number5
Publication statusPublished - 17 May 2022


  • electron beam
  • laser-generated seed plasma
  • plasma production


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