采用“弱聚焦”的简单紧凑光路,首次运用萘和PTP得到脉宽3ns、调制度大于90％、总能量6.3mJ、空间发散角2mrad,每次4～5个尖峰的XeCl~*准分子激光被动锁模脉冲序列。

Passive mode-locking of a XeCl laser is achieved by using PTP and naphthalene as saturable absorbers for the first time. In a compact laser cavity with "soft focus" arrangement, modulation of 90% and pulse train of 4～5 distinct 3-ns spikes are obtained. The total energy of mode-locked pulse is 6.3mJ with a beam spread angle of 2 m rad.