In the closed microcavity of an ideal four-levellaser system, when nonradiative depopulation is zero, the light output property of the microcavity laser is linearly.
在封闭腔,对理想的四能级激光系统,无辐射衰减速率为零时微腔激光器的光输出特性是线性的。
2
Solid laser is a four-level system.
固体激光器是一个四能级系统。
3
The rate equations for a continuous fourlevellaser are solved in this letter, taking into account the finite lower level lifetime and the crystal field splitting of the laser levels.