具有三级放大结构的铷蒸气激光系统的优化设计

发布时间：2018-05-15 03:13

本文选题：气体激光器 + 端面泵浦　；参考：《红外与激光工程》2016年11期

【摘要】：由于半导体激光泵浦碱金属蒸气激光器(DPAL)的饱和增益较大,因此采用主振荡功率放大器(MOPA)结构对其进行定标放大是实现其高功率化的理想选择。基于端面泵浦DPAL-MOPA系统的微观动力学理论模型设计了铷蒸气DPAL的三级放大系统。另外,分别对长度为3、5、7 cm的三种密闭蒸气池在不同温度条件下的增益特性做了详细的计算与分析,最终确定预放大级的密闭蒸气池长度为3 cm,一级主放大级的为5 cm,二级主放大级的为7 cm。基于这种三级MOPA结构可把功率为50 m W的铷蒸气DPAL种子光放大至1 000 W量级。同时,也评估了采用此设计方案时,整个MOPA系统所产生的自发辐射功率和热功率。该研究对将来实现高功率DPAL提供了设计思路和理论依据。
[Abstract]:Because the saturation gain of the semiconductor laser pumped alkali metal vapor laser (DPAL) is larger, it is the ideal choice to use the main oscillating power amplifier (MOPA) structure to achieve its high power. The three stage amplification system of rubidium vapor DPAL is designed based on the micro dynamic theory model of the end pumped DPAL-MOPA system. In addition, the gain characteristics of three closed steam pools with length of 3,5,7 cm under different temperature conditions are calculated and analyzed in detail. Finally, the closed steam pool length of the pre amplification stage is 3 cm, the first stage main amplification stage is 5 cm, and the two stage main amplifier stage is 7 cm. based on this three MOPA structure, the power of 50 m W can be steamed. The gas DPAL seeds are amplified to the magnitude of 1000 W. Meanwhile, the spontaneous radiation power and thermal power produced by the whole MOPA system are also evaluated when this design is adopted. The study provides a design idea and theoretical basis for the future realization of high power DPAL.

【作者单位】：西南技术物理研究所;
【分类号】：TN248

【相似文献】