太阳光抽运激光器抽运系统优化

太阳光抽运激光器中,抽运系统提供的太阳抽运光与激活晶体之间的耦合决定了激光输出的总体效率。使用Tracepro软件,建立了菲涅耳透镜、锥形抽运腔二级抽运系统模型,并对该系统进行优化。通过分析菲涅耳透镜焦斑能量沿轴线的分布,得到了锥形腔入射窗口的口径和窗口距菲涅耳透镜的距离。通过改变锥形抽运腔的腔长和锥度,分析晶体棒轴向抽运功率密度分布,得到了锥形腔的最佳结构,并对镜面反射腔和陶瓷腔进行了详细的介绍。

Optimization of Pumping System in Solar Pumped Laser

The coupling between solar light radiation and laser rod medium in a solar pumped laser affects the efficiency of the laser. To optimize the pumping system, simulation of the two-stage pumping system with a Fresnel lens and a conic pumping cavity is carried out with Tracepro software. According to the power density distribution along the axis at focal place of the Fresnel lens, the diameter and position of the pumping cavity window and the distance of the window from the Fresnel lens are optimized. The power density distributions along the laser rod axis of different cavity lengths and different cavity tapers are also analyzed. The optimal structure of taper cavity is obtained. The mirror reflecting cavity and ceramic cavity are introduced in detail.