Abstract

We report on a single shot optical parametric chirped pulse amplifier designed to seed the Petawatt Aquitaine Laser on the Laser Integration Line facility multipetawatt high-energy laser. The scheme is based on a stretched signal pulse at 1053  nm amplified with 20% conversion efficiency by a monomode pump pulse at 527  nm. The homemade pump laser is able to deliver a single shot beam with a square flat top spatial profile and programmable temporal shape. A high-stability 150   mJ, 8   nm, and 4.5   ns stretched pulse is then obtained with an excellent quality spatially shaped beam.

© 2007 Optical Society of America

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