异地光频梳校准方法实验研究  

Experimental Study on Calibration Method of Offsite Optical Frequency Comb

作　　者：席文飞 孟飞[2,3] 林百科 苏亚北 薛潇博 赵耀 高业胜[5] 曹士英[2,3] 林弋戈[2,3] 郎利影 方占军[2,3] XI Wenfei;MENG Fei;LIN Baike;SU Yabei;XUE Xiaobo;ZHAO Yao;GAO Yesheng;CAO Shiying;LIN Yige;LANG Liying;FANG Zhanjun(School of Electronic and Information Engineering,Hebei University of Technology,Tianjin 300401,China;Division of Time and Frequency Metrology,National Institute of Metrology,Beijing 100029,China;Key Laboratory of State Administration for Market Regulation(Time Frequency and Gravity Primary Standard),Beijing 100029,China;Key Laboratory of Metrology and Calibration,Beijing Institute of Radio Measurement,Beijing 100854,China;The 41st Institute of China Electronics Technology Group Corporation,Qingdao,Shandong 266555,China)

机构地区：[1]河北工业大学电子信息工程学院,天津300401 [2]中国计量科学研究院时间频率计量研究所,北京100029 [3]国家市场监管重点实验室(时间频率与重力计量基准),北京100029 [4]北京无线电计量测试研究所计量与校准重点实验室,北京100854 [5]中国电子科技集团公司第四十一研究所,山东青岛266555

出　　处：《计量学报》2025年第2期259-266,共8页Acta Metrologica Sinica

基　　金：国家重点研发计划(2021YFF0603802)。

摘　　要：为实现异地校准光频梳,提出了利用1台稳频激光器作为传递标准器的校准方法并进行了实验研究。实验首先利用中国计量科学研究院的标准光频梳,标定了传递激光器的频率均值为194369489387885 Hz,相对扩展不确定度为1.03×10^(-13)(k=2),平均秒级稳定度为1.7×10^(-13)。该实验持续一年半时间,并经过数次长途搬运。在此基础上,实验通过传递激光器分别对2台异地光频梳进行了校准,其中使用参考到氢钟的光频梳测量均值为194369489387827 Hz,相对扩展不确定度为3.2×10^(-13)(k=2),校准值为+58 Hz,平均秒级稳定度为2.0×10^(-13);使用参考至铷钟的光频梳测量均值为194369489388579 Hz,相对扩展不确定度为5.8×10^(-11)(k=2),校准值为-694 Hz,平均秒级稳定度为4.5×10^(-12)。此研究为参考到微波频率标准上的光频梳远程校准提供了新的途径。To achieve offsite calibration of optical frequency combs,a calibration method using a frequency-stabilized laser as a transfer standard was proposed and experimentally demonstrated.The experiment used a standard optical frequency comb in National Institute of Metrology to calibrate the mean frequency of the transfer laser to 194369489387885 Hz,with the relative expanded uncertainty of 1.03×10^(-13)(k=2),the average stability was 1.7×10^(-13)@1 s.The experiment lasted one and a half years and involved several long-distance transports.On this basis,the experiment was calibrated by means of a transfer laser on two off-site optical frequency combs,respectively,in which the measured mean value of the optical frequency comb using a reference to the H-maser is 194369489387827 Hz,with the relative extended uncertainty of 3.2×10^(-13)(k=2),a calibration value of+58 Hz,and an average stability of 2.0×10^(-13)@1s;The measured mean value of the optical frequency comb using a reference to Rubidium clock is 194369489388579 Hz,with the relative extended uncertainty of 5.8×10^(-11)(k=2),a calibrated value of-694 Hz,and an average stability of 4.5×10^(-12)@1s.The study provides a novel approach for remote calibration of optical frequency combs referenced to microwave frequency standards.

关 键 词：计量学 绝对频率测量 光频梳 远程校准 稳频激光器 光频标 

分 类 号：TB939[一般工业技术—计量学]