title: Dynamical description of transient x-ray lasers seeded with high-order harmonic radiation through Maxwell-Bloch numerical simulations.
abstract: The Maxwell-Bloch code COLAX has been upgraded to use detailed hydrodynamical and collisional-radiative simulations of a soft x-ray laser plasma with traveling-wave pumping. The seeding of short pulses of high-order harmonics of the pump laser into the x-ray laser medium has been simulated. The amplification is shown to be a dynamic, two-stage process: the atomic dipoles of the lasing ions are first coherently excited by the short pulse, and subsequently generate a radiation wake which is amplified along its path through the plasma, with consequences on the experimentally recorded spectra.
authors.affiliation: LIXAM, Bâtiment 350, Université Paris-Sud, 91405 Orsay Cedex, France.
authors.forename: I R
authors.initials: IR
authors.lastname: Al'miev
authors.forename: O
authors.initials: O
authors.lastname: Larroche
authors.forename: D
authors.initials: D
authors.lastname: Benredjem
authors.forename: J
authors.initials: J
authors.lastname: Dubau
authors.forename: S
authors.initials: S
authors.lastname: Kazamias
authors.forename: C
authors.initials: C
authors.lastname: Möller
authors.forename: A
authors.initials: A
authors.lastname: Klisnick