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 $1053\text{\hspace{0.17em} nm}$ amplified with 20% conversion efficiency by a monomode pump pulse at $527\text{\hspace{0.17em} nm}$. 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 $\text{150 mJ}$, $\text{8 nm}$, and $\text{4.5 ns}$ stretched pulse is then obtained with an excellent quality spatially shaped beam.

© 2007 Optical Society of America

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