小尺寸环形气体激光器增益损耗比特性  

Gain-Loss Ratio of Small Ring Lasers

作　　者：樊振方 徐小清 谭中奇[1] 李成聪 Fan Zhenfang;Xu Xiaoqing;Tan Zhongqi;Li Chengcong(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha,Hunan 410073,China)

机构地区：[1]国防科技大学前沿交叉学科学院

出　　处：《中国激光》2019年第11期68-72,共5页Chinese Journal of Lasers

基　　金：国防科技大学校预研项目(ZK16-03-02,ZK16-03-21);湖南省科技项目(2016GK2002)

摘　　要：增益损耗比是气体激光器的重要工作参量之一,它对激光陀螺的整体设计和实际性能有很大的影响。小尺寸环形气体激光器具有较宽的模间隔,为这一参数的测量提供了便利。根据理论推导,得出增损比的简化计算公式。提出一种测量增损比的实验方法,并对大批量的激光器进行实验研究。实验结果表明,在现有的高水平光学加工工艺和调腔精度下,环形激光器的平均增益损耗比已经达到3.55。Gain-loss ratio is an essential parameter of gas lasers and has a substantial effect on the design and performance of ring laser gyroscopes. Small ring gas lasers have wide mode spacing;therefore, it is convenient to measure the gain-loss ratio. A simple formula for calculating the gain-loss ratio is derived theoretically. Then, an experimental method is proposed to measure this parameter, and experiments are conducted for a large number of lasers. Results show that by taking advantage of precise optical machining and cavity alignment, the average gain-loss ratio of a ring laser can reach up to 3.55.

关 键 词：激光器 激光陀螺 增益损耗比 出光带宽 

分 类 号：TN212.14[电子电信—物理电子学]