Wavefront-sensing-based approach for spatio-temporal couplings analysis of broadband femtosecond pulses

In this work, we exploit wavefront-sensing based approach for Spatio-spectral characterization of broadband femtosecond pulses. The measurement was performed the Apollon multi-Petawatt laser system (CEA Saclay, France). The leaked laser beam was collected after the 2-grating compressor and the down collimator. This obtained results demonstrate the suitability of the device for compressor alignment. We will present as well concrete results on other high-power ultrashort laser beamlines, highlighting the interest of wavefront-sensing based approach offering a high resolution on both spectral and spatial phases.