Chromatic aberrations correction of attosecond high-order harmonic beams by flat-top spatial shaping of the fundamental beam

K. Veyrinas, M. Plach^*, J. Peschel, M. Hoflund, F. Catoire, C. Valentin, P. Smorenburg, H. Dacasa, S. Maclot, C. Guo, H. Wikmark, A. Zaïr, V. Strelkov, C. Picot, C. Arnold, P. Eng-Johnsson, A. L’Huillier, E. Mével, E. Constant^*