测量了新型晶体Nd:S-FAP，[Nd:Sr5(PO4)3F]的非偏振光吸收光谱。它具有宽的有效吸收带，在575 nm和804.5 nm处有二个强的吸收峰。采用微型氙灯泵浦实现了自由运转和染料片调Q运转。激光输出波长为1.059 μm。自由运转的阈值能量仅为150 mJ，斜效率为1.25％；调Ｑ输出的峰值功率密度为10 kW/cm2。测量了发射光谱及不同腔长、不同染料片小信号透射率情况下的输出能量、脉冲宽度等。

The absorption spectrum of a new crystal Nd:S FAP was measured and a broad effective absorption band and two strong absorption pesks at 575 nm and 804.5 nm were observed. By using a Xeon flash lamp pumping, laser operation has been demonstrated at 1.059 μm with threshold energy of only 150 mJ, slope efficiency of 1.25% and a peak power of 10 MW/cm 2. The emission spectrum, output energy and pulse width were presented. The prospect of Nd:S FAP crystal for low threshold and high efficiency miniature laser was discussed.