Abstract

A real-time closed feedback loop adaptive optics (AO) set-up has been developed for optical wave front qualification at Extreme Light Infrastructure - Nuclear Physics facility that hosts a dual arm 10 PW high power laser system [1]. The AO allows a dynamic wave front correction associated to optical components for high-peak ultra-short femtosecond laser systems. The AO set-up consists in (1) a Shack-Hartman wave front sensor (SHWFS), for measuring optical wave front deviations, (2) a deformable mirror (DM) that changes its shape in order to modify a distorted optical wave front, (3) a real-time closed control software to calculate the corresponding shape that the DM must assume in order to compensate the wave front distortions, and (4) a second SHWFS that provides wave front measuring capabilities for ~ 10 mm and 50 mm, respectively, laser beam diameter [2].

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