Diode-pumped femtosecond Cr:LiSAF laser

In this paper, we report the diode pumped femtosecond Cr:LiSAF laser. Through numerical analysis on the astigmatism, a folded three-mirror cavity is designed. Then we investigate its CW and mode locking operation. When it is pumped by the pulse, the output laser with time duration less than 100 fs is obtained.