采用结构紧凑的W型谐振腔设计,利用激光二极管(LD)抽运掺镱硅酸钇(Yb:YSO)晶体,用半导体可饱和吸收镜(SESAM)作为被动锁模元件,实现了稳定的连续锁模皮秒激光运转。在抽运功率为13.5 W时,获得了平均功率2.39 W的连续锁模输出,重复频率为104 MHz,实际测得脉冲宽度为3.2 ps,中心波长为1043.5 nm,光谱半峰全宽约为1 nm。

In the W type cavity,a laser diode-pumped passively mode-locked Yb:YSO laser is demonstrated with semiconductor saturable absorber mirror (SESAM).At the pump power of 13.5 W,the average output pulse power is 2.39 W,and the repetition rate is 104 MHz.The actual pulse width is 3.2 ps,the center wavelength is at 1043.5 nm,and the full-width at half-maximum of the spectrum is 1 nm.