LD抽运共掺Er,Yb玻璃激光器中的跃迁过程较复杂 ,针对双掺离子之间的能量传递和Er3 +的多种跃迁过程 ,给出了详细的准三能级系统的速率方程 ,在合理简化后进行了数值分析 ,分析了Er3 +掺杂浓度和介质长度、抽运光斑、输出镜透过率、谐振腔长、抽运光的椭圆度等因素对激光阈值及斜率效率的影响 . LD pumping co-doped Er, Yb glass laser in the transition process is more complicated, according to the energy transfer between the double doping ions and Er3 + multiple transition process, given the rate of quasi-three-level system equation, in The effects of Er3 + doping concentration, medium length, pumping spot, transmission of the output mirror, cavity length and ellipticity of pumping light on laser threshold and slope efficiency were analyzed.