Two-colour free electron laser with wide frequency separation using a single monoenergetic electron beam

Lawrence Campbell, Brian McNeil, Sven Reiche

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Studies of a broad bandwidth, two-colour FEL amplier using one monoenergetic electron beam are presented. The two-colour FEL interaction is achieved using a series of undulator modules alternately tuned to two well-separated resonant frequencies. Using the broad bandwidth FEL simulation code Puffin, the electron beam is shown to bunch strongly and simultaneously at the two resonant frequencies. Electron bunching components are also generated at the sum and difference of the resonant frequencies.
Original languageEnglish
Article number103019
Number of pages10
JournalNew Journal of Physics
Publication statusPublished - 9 Oct 2014


  • free electron laser
  • two-colour
  • FEL
  • resonant frequencies
  • CLARA conceptual design report

    Clarke, J., Angal-Kalinin, D., Bliss, M., Buckley, R., Buckley, S., Cash, R., Corlett, P., McNeil, B. & Campbell, L., 9 May 2014, In: Journal of Instrumentation. 9, May, 96 p., T05001.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    48 Citations (Scopus)
    209 Downloads (Pure)

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