Observation of Terahertz Emission from a Laser-Plasma Accelerated Electron Bunch Crossing a Plasma-Vacuum Boundary

W. P. Leemans, C. G.R. Geddes, J. Faure, Cs Tóth, J. van Tilborg, C. B. Schroeder, E. Esarey, G. Fubiani, D. Auerbach, B. Marcelis, M. A. Carnahan, R. A. Kaindl, J. Byrd, M. C. Martin

Research output: Contribution to journalArticlepeer-review

323 Scopus citations

Abstract

Coherent radiation in the 0.3–3 THz range has been generated from femtosecond electron bunches at a plasma-vacuum boundary via transition radiation. The bunches produced by a laser-plasma accelerator contained 1.5 nC of charge. The THz energy per pulse within a limited 30 mrad collection angle was 3–5 nJ and scaled quadratically with bunch charge, consistent with coherent emission. Modeling indicates that this broadband source produces about [Formula presented] per pulse within a 100 mrad angle, and that increasing the transverse plasma size and electron beam energy could provide more than [Formula presented].

Original languageEnglish (US)
JournalPhysical Review Letters
Volume91
Issue number7
DOIs
StatePublished - Aug 14 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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