%0 Journal Article
%T Smoothing of laser energy deposition by gas jets
%+ Dipartimento di Fisica "Giuseppe Occhialini" = Department of Physics "Giuseppe Occhialini"  [Milano-Bicocca]
%+ Laboratoire d'optique appliquée (LOA)
%+ Laboratoire pour l'utilisation des lasers intenses (LULI)
%+ PALS Research Centre, Za Slovankou 3, 18221 Prague 8, Czech Republic
%+ Czech Technical University in Prague (CTU)
%+ Centre d'Etudes Lasers Intenses et Applications (CELIA)
%A Batani, D.
%A Benocci, R.
%A Dezulian, R.
%A Redaelli, R.
%A Canova, F.
%A Stabile, H.
%A Lucchini, G.
%A Malka, Victor
%A Faure, Jérôme
%A Koenig, M.
%A Krousky, E.
%A Masek, K.
%A Pfeifer, M.
%A Skala, J.
%A Dudzak, R.
%A Limpouch, J.
%A Tikhoncuk, V.
%A Nicolai, P.
%< avec comité de lecture
%@ 1951-6355
%J The European Physical Journal. Special Topics
%I EDP Sciences
%V 175
%N 1
%P 65-70
%8 2009
%D 2009
%R 10.1140/epjst/e2009-01119-2
%Z Physics [physics]/Physics [physics]/Optics [physics.optics]Journal articles
%X Smoothing of laser beam non-uniformities using gas jets has been studied. The experiment has been performed with the PALS laser working at 0.44 ?m with an intensity of about 1015 W/cm2. The laser beam has been split in two by a prism thus creating an artificial large-scale non-uniformity (?90 ?m). We recorded time resolved and static images of laser-gas jet interaction with and without an Al target. Multi 1D and 2D simulations show that such interaction acts redistributing the over-intensities over larger surface. This effect has to be attributed to ionization processes with consequent laser beam refraction. Results show that Argon gas jet produces a strong refraction of the laser beam thus strongly reducing the initial two spots separation. © EDP Sciences and Springer 2009.
%G English
%L hal-00964913
%U https://hal-ensta-paris.archives-ouvertes.fr/hal-00964913
%~ CEA
%~ X
%~ UPMC
%~ ENSTA
%~ CNRS
%~ X-LOA
%~ X-LULI
%~ X-DEP
%~ X-DEP-PHYS
%~ ENSTA_LOA
%~ DAM
%~ UPMC_POLE_2
%~ SORBONNE-UNIVERSITE
%~ SU-SCIENCES
%~ IRAMIS
%~ ALLIANCE-SU