光学频率标准研究进展  

Research Progress of the Optical Frequency Standard

作　　者：赵国栋 卢晓同 常宏[1,2] Zhao Guodong;Lu Xiaotong;Chang Hong(Key Laboratory of Time and Frequency Primary Standards,National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,Shaanxi,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049 China)

机构地区：[1]中国科学院国家授时中心时间频率基准重点实验室,陕西西安710600 [2]中国科学院大学天文与空间科学学院,北京100049

出　　处：《激光与光电子学进展》2023年第11期34-45,共12页Laser & Optoelectronics Progress

基　　金：中国科学院战略性先导科技专项(B类)(XDB35010202);国家自然科学基金(12203057)。

摘　　要：光钟在近20年里发展迅速,稳定度和系统不确定度均比当前最好的微波原子钟高出两个量级,目前已有10个光学跃迁被国际计量局选定为二级秒定义并参与原子时的产生。本文介绍了光钟的工作原理和系统性能的评估,阐述了离子光钟和光晶格钟的最新研究进展,并总结了光钟绝对频率测量方法和进入二级秒定义的光频跃迁的测量结果。Optical clocks have developed rapidly in the past 20 years,and their stability and systematic uncertainty are two orders of magnitude better than the current best microwave atomic clocks,and currently,there are 10 optical transitions which have been selected as the secondary representations of the definition of the second by the International Bureau of Metrology and participate in the generation of the international atomic time.This paper introduces the operational principle and evaluations of the performance of optical clocks,the latest research progress of ionic optical clocks and optical lattice clocks,elaborates the progress of the absolute frequency measurement of optical clocks,and summarizes the measurement results of the secondary representations of the definition of the second by optical frequency transitions.

关 键 词：光通信 光钟 光频标 秒定义 原子钟 

分 类 号：O59[理学—应用物理]