We report the mode-locked operation of two new Yb-doped oxyorthosilicates, ${\mathrm{Y}}_2{\mathrm{SiO}}_5$ (YSO) and ${\mathrm{Lu}}_2{\mathrm{SiO}}_5$ (LSO), that are longitudinally diode pumped. $\mathrm{Yb}:\mathrm{YSO}$ supplied pulses as short as $122\mathrm{fs}$ with $410\mathrm{mW}$ of output power at $1041\mathrm{nm}$ . More than $2.6\mathrm{W}$ of average output power, for pulse durations of $198\mathrm{fs}$ at $1044\mathrm{nm}$ and $260\mathrm{fs}$ at $1059\mathrm{nm}$ for $\mathrm{Yb}:\mathrm{YSO}$ and $\mathrm{Yb}:\mathrm{LSO}$ , respectively, were provided. These are, to our best knowledge, the highest values ever obtained and the most efficient mode-locked laser in such a classic fiber-coupled diode-pumping configuration.