300-mW average power in 22-fs pulses from a multi-mode diode pumped Yb:CALGO oscillatorF. Trawi, J. Drs, M. Müller, M. Hamrouni, V.J. Wittwer and T. SüdmeyerEPJ Web Conf., 307 (2024) 04008DOI: https://doi.org/10.1051/epjconf/202430704008