Modeling of dense injection-seeded Ni-like Krypton plasma amplifiers

Abstract : One promising way to reach ultra-short soft X-ray lasers is to guide an intense infrared pulse through a plasma channel generated in a high pressure gas. However, in such a case, strong non-linear effects, as overionization-induced refraction and self-focusing, hinder the propagation of the laser beam and thus the creation of the lasing ion and the population inversion. Using a particle-in-cell (PIC) code and a ray-tracing model, we demonstrate that a stable self-regulation mechanism between self-focusing and overionization appears, which enables guiding the infrared beam over several milimetres, well beyond the saturation length for amplification of the soft X-ray laser.
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https://hal-ensta-paris.archives-ouvertes.fr//hal-01402233
Contributor : Pierre Zaparucha <>
Submitted on : Thursday, November 24, 2016 - 2:08:17 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:03 AM

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Eduardo Oliva, Adrien Depresseux, Fabien Tissandier, Julien Gautier, Stéphane Sebban, et al.. Modeling of dense injection-seeded Ni-like Krypton plasma amplifiers. Conference on X-Ray Lasers and Coherent X-Ray Sources - Development and Applications XI, Aug 2015, San Diego, CA, United States. ⟨10.1117/12.2187034⟩. ⟨hal-01402233⟩

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