Design, deposition, and characterization of multilayer mirrors for ultrashort pulses in the attosecond domain

We present the design, the optimization and the realization of multilayer mirrors for the transport and the compression of attosecond pulses generated by high harmonics emission from 35 eV to 55 eV. At wavelength characterizations have been performed on an attosecond source. We explore also the phase determination of the complex reflectivity from photon-electron emission measurement on synchrotron beamline.