A 54-fs diode-pumped Kerr-lens mode-locked Yb∶LuYSiO5 laser

We demonstrate a Kerr-lens mode-locked Yb∶LuYSiO5(Yb∶LYSO)laser with the pulse duration of 54 fs,correspond-ing to a spectral bandwidth of 25 nm centered at 1062 nm.To the best of our knowledge,this is the shortest pulse duration obtained from Yb∶LYSO laser.At the repetition rate of 378.3 MHz,an output power of 111.6 mW is obtained using an output coupler with 0.6％transmittance,which can maintain long-time stable mode-locking more than 13 h.