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测定了Ｃｅ３＋，Ｅｒ３＋∶ＹＡＧ中Ｃｅ３＋离子的吸收截面．用从能级跃迁速率方程和激光传输方程推出的表达式计算了１６μｍ波长激光的阈值能量（功率）和斜率效率．表明在Ｃｅ３＋，Ｅｒ３＋∶ＹＡＧ中，Ｃｅ３＋对Ｅｒ３＋离子的激光性能影响与激活离子Ｅｒ３＋的浓度、晶棒大小有关．短晶棒或浓度低的晶体加入Ｃｅ３＋可降低Ｅｒ３＋的激光阈值，增加斜率效率．而长晶棒、或Ｅｒ３＋浓度高的晶体加入Ｃｅ３＋反而增加激光阈值，减小斜率效率．
The absorption cross sections of Ce3 + ions in Ce3 +, Er3 +: YAG were measured. The threshold energy (power) and slope efficiency of 1 6μm wavelength laser were calculated by using the expressions derived from the energy level transition rate equation and the laser propagation equation. It is indicated that the influence of Ce3 + on the laser properties of Er3 + ions in Ce3 +, Er3 +: YAG is related to the concentration of activated ions Er3 + and the size of the ingot. Short grain rods or low concentration crystals added to Ce3 + reduce the Er3 + laser threshold and increase the slope efficiency. The long crystal rods, or high concentrations of Er3 + Ce3 + crystals added to increase the laser threshold, reducing the slope efficiency.