含热透镜多元件谐振腔的动态工作特性

由于光泵浦热效应,高功率固体激光器的输出参数如光束远场发散角、输出功率等会发生变化。本文使用g-参数等价腔详细研究了各种类型稳定腔、临界腔的动态工作特性,例如g-参数图上工作点的运动规律、临界光焦度、临界g参数以及光斑半径、远场发散角等。文中还对理论的实验验证和应用进行了讨论。

Dynamic characteristics of multi-element resonators with an internal thermal lens

The outpu t parameters such as beam divergence angle in far-field output power of high power solid state lasers are variable due to thermal effect of optical pumping. In this paper the dynamic characteristics of various stable and critical resonator configurations, for example, moving rule of working point in the g*-parameter diagram, critical refractive power, critical g*-parameter, beam radius and external far-field divergence angle are investigated in detail using equivalent g*-parameter resonator. The experimental verification and their application are discussed.