Experimental demonstration of a low repetition rate optical frequency comb Francesco Canella, Johannes Weitenberg, Paras Dwivedi, Fabian Schmid, Gianluca Galzerano, Theodor W. Hänsch, Thomas Udem and Akira Ozawa EPJ Web Conf., 287 (2023) 07023 Published online: 18 October 2023 DOI: 10.1051/epjconf/202328707023