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Interferometry for full temporal reconstruction of laser-plasma accelerator-based seeded free electron lasers

Abstract : The spectacular development of Laser-Plasma Accelerators (LPA) appears very promising for a free electron laser application. The handling of the inherent properties of those LPA beams already allowed controlled production of LPA-based spontaneous undulator radiation. Stepping further, we here unveil that the forthcoming LPA-based seeded FELs will present singular spatio-spectral distributions. Relying on numerical simulations and simple analytical models, we show how those interferometric patterns can be exploited to retrieve, in single-shot, the spectro-temporal content and source point properties of the FEL pulses.
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https://hal.archives-ouvertes.fr/hal-03090331
Contributor : Eléonore Roussel <>
Submitted on : Tuesday, December 29, 2020 - 6:17:39 PM
Last modification on : Wednesday, January 13, 2021 - 3:38:15 AM

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M. Labat, S. Bielawski, A. Loulergue, S. Corde, M-E Couprie, et al.. Interferometry for full temporal reconstruction of laser-plasma accelerator-based seeded free electron lasers. New Journal of Physics, Institute of Physics: Open Access Journals, 2020, 22 (1), pp.013051. ⟨10.1088/1367-2630/ab6878⟩. ⟨hal-03090331⟩

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