低阈值高效率新型晶体Nd：Sr_5（PO_4）_3F腔内倍频研究

STUDY ON IN TRACAVITY-DOUBLING OF A NEW LOW-THRESHOLD HIGH EFFICIENCYNd:Sr5(PO4)3F CRYSTAL

采用氙灯泵浦新型晶体Ｎｄ：Ｓｒ_５（ＰＯ_４）_３Ｆ，以ＫＴＰ晶体腔内倍频，实现了该晶体０．５２９５μｍ绿光激光ＢＤＮ染料片调Ｑ运转．测量了输出绿光激光的特性及不同腔长和染料片小信号透过率情况下的输出能量及脉冲宽度，给出了染料片调Ｑ腔内倍频的耦合波方程组，数值求解该方程组，所得的理论数据与实验结果较好地相符．

Using xenon flash lamp as pump source,KTP as frequency-doubling crystal and BDN dye film as passive Q-switch,we have achieved Nd:S-FAP green laser at 0.5295μm.The green laser output energy and pulse width were measured under the conditions of different resonator length and small-signal transmission of dye film. Meanwhile,the Q-switching coupling wave rate equations for intracavity-doubling were given and the experiment results were in agreement with the numerical solutions of equations.