Comparison of natural and forced amplification regimes in plasma-based soft-x-ray lasers seeded by high-order harmonics

Abstract : The amplification of high-order harmonics (HOH) in a plasma-based amplifier is a multiscale, temporal phenomenon that couples plasma hydrodynamics, atomic processes, and HOH electromagnetic fields. We use a one-dimensional, time-dependent Maxwell-Bloch code to compare the natural amplification regime and another regime where plasma polarization is constantly forced by the HOH. In this regime, a 10-MW (i.e., 100 times higher than current seeded soft x-ray laser power), 1.5-mu J, 140-fs pulse free from the parasitic temporal structures appearing on the natural amplification regime can be obtained.
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https://hal-ensta-paris.archives-ouvertes.fr//hal-01406421
Contributor : Pierre Zaparucha <>
Submitted on : Thursday, December 1, 2016 - 10:50:15 AM
Last modification on : Wednesday, July 3, 2019 - 10:48:03 AM

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Eduardo Oliva, Philippe Zeitoun, Marta Fajardo, Guillaume Lambert, David Ros, et al.. Comparison of natural and forced amplification regimes in plasma-based soft-x-ray lasers seeded by high-order harmonics. Physical Review A, American Physical Society, 2011, 84 (1), ⟨10.1103/PhysRevA.84.013811⟩. ⟨hal-01406421⟩

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