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Pulse Splitting in Short Wavelength Seeded Free Electron Lasers

Abstract : We investigate a fundamental limitation occurring in vacuum ultraviolet and extreme ultraviolet seeded free electron lasers (FELs). For a given electron beam and undulator configuration, an increase of the FEL output energy at saturation can be obtained via an increase of the seed pulse duration. We put in evidence a complex spatiotemporal deformation of the amplified pulse, leading ultimately to a pulse splitting effect. Numerical studies of the Colson-Bonifacio FEL equations reveal that slippage length and seed laser pulse wings are core ingredients of the dynamics.
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http://hal.in2p3.fr/in2p3-00449037
Contributor : Sabine Starita <>
Submitted on : Wednesday, January 20, 2010 - 4:57:52 PM
Last modification on : Monday, March 29, 2021 - 5:30:02 PM

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M. Labat, N. Joly, S. Bielawski, C. Szwaj, C. Bruni, et al.. Pulse Splitting in Short Wavelength Seeded Free Electron Lasers. Physical Review Letters, American Physical Society, 2009, 103, pp.264801. ⟨10.1103/PhysRevLett.103.264801⟩. ⟨in2p3-00449037⟩

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