环行倍频稳频Nd：YAP激光器

Frequency-stabilized and Frequency-doubled Ring Nd: YAP Laser

采用同时满足热不灵敏与最佳倍频条件的六镜及四镜８字型环行谐振腔，设计了内腔倍频稳频Ｎｄ：ＹＡＰ激光器。六镜腔与四镜腔分别在输入１．４４ｋｗ和１．２ｋＷ电功率的情况下，获得了８００ｍＷ与５８０ｍｗ的单频倍频光（λ＝０．５４μｍ），功率波动小于±２．５％与±２％，频率稳定性优于±１．９ＭＨｚ与±１ＭＨｚ。

Frequency-stabilized and frequency-doubled ring Nd:YAP lasers with a 6-mirror cavity or a 4-mirror cavity have been demonstrated.The designed lasers satisfy conditions both of thermal insensitivity and of optimum frequency-doubling. The secondharmonic outpllt POwers up to 800 mW and 580 mW with the intensity fluctuations less than ±2. 5% and±2% as well as the long-term frequency stabilities better than±1.9 MHz and±1 MHz have been obtained respectively for the 6-mirror cavity with an input electric power of 1.44 kW and the 4-mirror cavity with an input electric POwer of 1. 2 kW.