K-Rb双碱金属混合光抽运原子气室制备与测试  

Preparation and test for the hybrid optical pumping atomic vapor cell filled with two kinds of alkali metals of K-Rb

作　　者：王风娇 王天顺 李新坤[1,2] 刘院省 蔡玉珍[1,2] 郑建朋 WANG Fengjiao;WANG Tianshun;LI Xinkun;LIU Yuanxin;CAI Yuzhen;ZHENG Jianpeng(Quantum Engineering Research Center of CASC,Beijing 100094,China;Beijing Institute of Aerospace Control Devices,Beijing 100039,China)

机构地区：[1]中国航天科技集团有限公司量子工程研究中心,北京100094 [2]北京航天控制仪器研究所,北京100039

出　　处：《中国惯性技术学报》2023年第8期844-848,共5页Journal of Chinese Inertial Technology

基　　金：科工局稳定支持计划(WDZC20190202)。

摘　　要：原子气室是SERF(无自旋交换弛豫)陀螺仪敏感载体转动信息的核心器件,其原子弛豫时间等参数是影响SERF陀螺仪性能的重要因素。采用39K-87Rb双碱金属混合填充的原子气室制造工艺,通过双碱金属工作介质的混合光抽运检测技术对气室性能进行了测试,制备出边长8 mm,壁厚1 mm的立方体原子气室。实验结果表明,39K-87Rb-129Xe混合原子气室中129Xe原子弛豫时间达到51.7 s,较单一碱金属填充方式的22 s,双碱金属混合光抽运的方式有效提升了原子气室中原子弛豫时间,为研制高精度SERF陀螺仪奠定了坚实基础。The alkali metal atomic vapor cell is the core device to sense the rotation information of the SERF(spin exchange relaxation free)gyroscope.Parameters of the atomic vapor cell such as relaxation time affect the performance of the SERF gyroscope.A cubic atomic vapor cell with side length of 8 mm and wall thickness of 1 mm is prepared by using the manufacturing process of the atomic vapor cell filled with 39K-87Rb alkali metal mixture,and the atomic vapor cell is tested by hybrid optical pumping detection technology.The experiment results show that the relaxation time of 129Xe in the hybrid atomic vapor cell filled with 39K-87Rb-129Xe reaches 51.7 s,compared with 22 s in the single alkali metal filling method,the hybrid optical pumping atomic vapor cell filled with two kinds of alkali metals improves the relaxation time of the atomic vapor cell and lays a solid foundation for the research of high-precision atomic gyroscope.

关 键 词：原子气室 双碱金属填充 混合光抽运 SERF陀螺 

分 类 号：TN305.7[电子电信—物理电子学]