掺杂浓度 1. 53 μm photoluminescence intensity,doped concentration,and pump power were numerically simulated for Yb-Er co-doped . 考虑两级合作上转换、激发态吸收和交叉弛豫等非线性效应,建立了镱铒共掺氧化铝材料体系的八个能级的速率方程,唯象地构造了合作