A5 - PROPAGATION D'IMPULSIONS LASER INTENSES DANS DES TUBES CAPILLAIRES

Laser plasma interaction over many Rayleigh lengths is desirable for applications such as plasma based accelerators, X ray lasers or fast ignitor concepts. A microcapillary tube can be used as a wave guide to propagate high laser intensities over lengths in the range of 10 th of cm. The conditions for monomode guiding of the laser, the damping length have been obtained analytically and verified i n experiments using one of the laser beam (30mJ, 120fs) of the Laboratoire d'Optique Appliquée facility.