Dynamical description of transient x-ray lasers seeded with high-order harmonic radiation through Maxwell-Bloch numerical simulations.
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.
Al'miev
I R
IR
LIXAM, Bâtiment 350, Université Paris-Sud, 91405 Orsay Cedex, France.
Larroche
O
O
Benredjem
D
D
Dubau
J
J
Kazamias
S
S
Möller
C
C
Klisnick
A
A