%0 Journal Article
%T Comparison of natural and forced amplification regimes in plasma-based soft-x-ray lasers seeded by high-order harmonics
%+ Laboratoire d'optique appliquée (LOA)
%+  Inst Super Tecn, GoLP Inst Plasmas & Fusao Nucl
%+ Laboratoire de physique des gaz et des plasmas (LPGP)
%+ Univ Politecn Madrid, ETS Ingenieros Ind, Inst Fusin Nucl, C Jose Gutierrez Abascal 2, E-28006 Madrid, Spain (IIFN)
%A Oliva, Eduardo
%A Zeitoun, Philippe
%A Fajardo, Marta
%A Lambert, Guillaume
%A Ros, David
%A Sebban, Stéphane
%A Velarde, Pedro
%< avec comité de lecture
%@ 1050-2947
%J Physical Review A : Atomic, molecular, and optical physics
%I American Physical Society
%V 84
%N 1
%8 2011-07-13
%D 2011
%R 10.1103/PhysRevA.84.013811
%K FREE-ELECTRON LASER
%K COHERENT
%K WAVELENGTH
%K RADIATION
%K BEAM
%K NM
%Z Physics [physics]/Physics [physics]/Optics [physics.optics]
%Z Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]Journal articles
%X 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.
%G English
%L hal-01406421
%U https://hal-ensta-paris.archives-ouvertes.fr/hal-01406421
%~ X
%~ ENSTA
%~ CNRS
%~ UNIV-PSUD
%~ X-LOA
%~ X-DEP
%~ X-DEP-PHYS
%~ OPENAIRE
%~ ENSTA_LOA
%~ UNIV-PARIS-SACLAY
%~ UNIV-PSUD-SACLAY
%~ UMR8578