Ultrafast Yb:CALGO laser oscillator based on cross-polarization pumping with a cost-efficient multi-mode diodeFiras Trawi, Jakub Drs, Michael Müller, Marin Hamrouni, Norbert Modsching, Valentin J. Wittwer and Thomas SüdmeyerEPJ Web Conf., 287 (2023) 08003DOI: https://doi.org/10.1051/epjconf/202328708003