输出镜透过率对Cr∶YAG被动调Q激光器的影响

Influence of output mirror transmissivity on the output characteristics of Cr∶YAG passively Q-switched laser

对LDA端面泵浦Cr∶YAG被动调Q Nd∶YAG激光器的输出特性进行了深入细致的研究,重点分析了输出耦合镜的透过率(T=3%、8%、20%、30%、40%)对平均输出功率、脉冲宽度、重复频率、以及单脉冲能量和峰值功率的影响。研究结果表明:在特定的激光参数下,Cr∶YAG被动调Q Nd∶YAG激光器的某些输出参数由输出镜透过率决定。T=8%时可以获得最大输出功率与重复频率,而T=20%时,可以获得最窄脉冲宽度、最高峰值功率以及最大单脉冲能量。

The output characteristics of a LDA end -pumped Cr ∶YAG passively Q -switched Nd：YAG laser are in-vestigated.The influence of the transmissivity of the output coupling mirror （T =3%,8%,20%,30%,40%）on the average output power,pulse width,repetition frequency,energy per pulse and peak power was analyzed.The results show that,with specific laser parameters,output mirror transmissivity decides some output parameters of Cr ∶YAG passively Q -switched Nd：YAG laser.When the transmissivity is 8%,the maximum output power and repetition fre-quency are obtained;and when the transmissivity is 20%,the narrowest pulse width,the highest peak power and the maximum energy per pulse are gotten.