J. C. Gauthier

TL;DR: Measurements of the characteristic melting time of InSb are presented with a recently developed technique of ultrafast time-resolved X-ray diffraction that, in contrast to optical spectroscopy, provides a direct probe of the changing atomic structure.

TL;DR: The laminarity of high-current multi-MeV proton beams produced by irradiating thin metallic foils with ultraintense lasers has been measured and appears to be at least 100-fold better than conventional accelerator beams.

TL;DR: A detailed experimental and theoretical study of the plasma mirror is presented that allows us to quantitatively assess the performances of this system and demonstrate that this system is very robust against changes in the pulse fluence and imperfections of the beam spatial profile, which is essential for applications.

TL;DR: Spectrally and spatially resolved K\ensuremath{\alpha} emission measurements using a cooled charge-coupled-device detector demonstrate the scaling capabilities of this x-ray source to energies in excess of 6 keV.

TL;DR: The first space-time observation of the ultrafast excitation and relaxation of an electron gas pumped into the conduction band of a wide band-gap insulator by an intense subpicosecond laser pulse is reported.