Characterization of a grating monochromator for the spectral selection of extreme-ultraviolet ultrafast pulses

This thesis describes the work made on the optical characterization of a time-preserving monochromator for the spectral selection of high-order laser harmonics. The system consists of two toroidal mirrors (collimator and condenser), and one among three plane gratings between them, with different groove densities, in a grazing incidence Czerny-Turner configuration. A comparation with simulated grating's efficiencies, pulse front-tilt and diffraction angles has been done