低热敏激光谐振腔理论和实验

本文介绍一种内含热聚焦元件的热不敏感谐振腔理论,给出新的严格的解析解法,分析了腔参数变化的影响,得到一些重要结论。用本方法设计了单模Nd:YAG激光器,并取得实验与理论分析相一致的结果。实验发现了两个不同阈值的热稳区,发现在一个合理设计的腔中,其热稳工作状态可对应于最大的TEM_(∞)模输出。 关键词：

THEORY AND EXPERIMENTS OF LASER RESONATOR WITH LOW SENSITIVITY TO THERMAL EFFECT

A theory for laser resonators with low sensitivity to thermal effect was introduced, the new analytic solution was obtained. The influence of the changing of the cavity parameters was analyzed and some important results were achieved. A monomode Nd: YAG laser was designed by our procedure and our theory was tested and verified through experiments. From the experiments, we found that the laser can operate at two different stable zones which have unequal threshold, and also that for a reasonably designed resonator, its operating state with. stability to thermal effect corresponds to the optimum TEM mode output.