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arXiv · 1906.11140

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

M. Labat·S. Bielawski·A. Loulergue·S. Corde·M. E. Couprie·E. Roussel
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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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M. Labat, S. Bielawski, A. Loulergue, S. Corde, M. E. Couprie, E. Roussel. 2019-06-26. Interferometry for full temporal reconstruction of laser-plasma accelerator-based seeded free electron lasers. https://doi.org/10.1088/1367-2630%2Fab6878

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