Synchronized and tunable femtosecond laser source from CW laser William Renard, Clément Chan, Antoine Dubrouil, Jérôme Lhermite, Giorgio Santarelli and Romain Royon EPJ Web Conf., 267 (2022) 02003 Published online: 18 October 2022 DOI: 10.1051/epjconf/202226702003