国产激光抽运铯原子钟的性能分析  

Performance analysis of domestic laser-pumped cesium atomic clock

作　　者：董文 赵当丽[1,3] 胡永辉[1,3] 张向波[1,2,3] 何在民 DONG Wen;ZHAO Dang-;HU Yong-hui;ZHANG Xiang;Zai-min(National Time Service Center,Chinese Academy of Sciences,Xi'an 710600,China;University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Time and Frequency Primary Standards,Chinese Academy of Sciences,Xi'an 710600,China)

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院大学,北京100049 [3]中国科学院时间频率基准重点实验室,西安710600

出　　处：《时间频率学报》2019年第4期319-326,共8页Journal of Time and Frequency

基　　金：陕西省重点研发计划一般资助项目（2018GY-004）

摘　　要：铯原子钟是建立和维持高精度守时系统的关键设备,其性能直接影响所建立守时系统的准确性和稳定性。在介绍铯原子钟主要性能指标及测试方法的基础上,对目前国产激光抽运小型铯原子钟的频率准确度、频率稳定度和频率漂移率等进行了测试、分析,并与美国5071A(优质管)型铯原子钟的性能进行了对比。结果表明:国产激光抽运铯原子钟的频率准确度优于9×10-13,但与5071A型铯原子钟频率准确度还存在差距;频率稳定度可达4.02×10-13/1 ks,1.27×10-13/10 ks,7.46×10-14/1 d,9.77×10-14/10 d,短期稳定度与5071A基本相当,长期稳定度与5071A有一定差距,可基本满足高精度守时系统的要求。Cesium atomic clock is the key device for establishing and maintaining high-precision time keeping systems, and its performances will directly affects the accuracy and stability of the established time keeping system. On the basis of introducing the main performances and the corresponding testing methods of cesium atomic clock, we have test and analyzed the frequency accuracy, frequency stability and frequency drift of domestic small-sized laser-pumped cesium atomic clock, and the results are compared with that of the 5071 A(High-performance cesium beam tube). The results show that the frequency accuracy of the domestic laser-pumped cesium atomic clock is better than 9× 10-13, and there is a gap when compares with the frequency accuracy of 5071 A. The frequency stability of the domestic laser-pumped cesium atomic clock achieves 4.02×10-13/1 ks, 1.27×10-13/10 ks, 7.46×10-14/1 d and 9.77× 10-14/10 d, the short-term frequency stability is basically the same as that of the 5071 A, and the long-term frequency stability has a certain gap with the 5071 A, which basically meets the requirements of high-precision time keeping system.

关 键 词：激光抽运铯原子钟 频率准确度 频率稳定度 频率漂移率 守时系统 

分 类 号：P127.1[天文地球—天体测量]