High-order harmonic generation in femtosecond laser micromachined devices Anna G. Ciriolo, Rebeca Martínez Vázquez, Gabriele Crippa, Davide Faccialà, Matteo Negro, Michele Devetta, Diogo Pereira Lopes, Aditya Pusala, Caterina Vozzi, Roberto Osellame and Salvatore Stagira EPJ Web Conf., 205 (2019) 02007 Published online: 16 April 2019 DOI: 10.1051/epjconf/201920502007