Cavity resonator free electron lasers as a source of stable attosecond pulses

McNeil, B.W.J. and Thompson, N.R. (2011) Cavity resonator free electron lasers as a source of stable attosecond pulses. EPL: A Letters Journal Exploring the Frontiers of Physics, 96. 54004. ISSN 0295-5075

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Abstract

High-gain Free Electron Laser amplifiers are a potential source of single X-ray attosecond pulses and Attosecond Pulse Trains. Single-pulse output from short electron bunches is prone to significant power and arrival-time fluctuations. A Mode Locked Optical Klystron configuration of the FEL amplifier predicts generation of a frequency comb that may be locked to give APT output. In this paper it is shown using numerical simulations that a low feedback (so-called Regenerative Amplifier) FEL cavity resonator configuration can significantly improve output stability for single-pulse operation. The MLOK configuration may also be used in a cavity resonator to generate a frequency comb with spacing much greater than those of the axial cavity modes. As with the MLOK amplifier case, these modes can lock to generate a stable pulse train, each of a few optical cycles.

ORCID iDs

McNeil, B.W.J. ORCID logoORCID: https://orcid.org/0000-0002-7267-611X and Thompson, N.R.;
  • Item type:Article
    ID code:36139
    Dates:
    Date
    Event
    2011
    Published
    24 December 2011
    Published Online
    Keywords:free electron lasers , attosecond pulses , cavity resonator, Optics. Light, Physics and Astronomy(all)
    Subjects:Science > Physics > Optics. Light
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:28 Nov 2011 11:51
    Last modified:18 Jun 2021 02:52
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/36139
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