| 基于相干极化调制的小型化CPT原子钟进展 |
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| 引用本文： | 黄承祖,齐万泉,刘星汛,彭博.基于相干极化调制的小型化CPT原子钟进展[J].宇航计测技术,2020,39(3):22-26. |
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| 作者姓名： | 黄承祖 齐万泉 刘星汛 彭博 |
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| 作者单位： | 1.中国科学院国家授时中心，陕西西安 710600；
2.中国科学院大学，北京 100049；
3.西北大学物理学院，陕西西安 710127 |
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| 基金项目： | 国家自然科学基金资助项目（U1731132）。 |
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| 摘 要： | 基于相干布局囚禁（Coherent Population Trapping）的被动型气泡原子钟，因其优良的短稳2E-13@1s和中期稳定度2.5E-15@104s，而成为高性能原子钟的有力竞争者。本文基于一种新构型来探索实现高性能小型化CPT原子钟。我们通过3.4GHz微波直接调制分布式布拉格反射(DBR)激光器产生相干双色光，同时在微波和激光光束上分别施加同步的相位调制和偏振调制，实现相干极化调制，获得了较高对比度（14.7%）和较窄线宽（416Hz）的CPT共振信号。该方案采用直接调制技术使原子钟系统体积、复杂性和环境敏感性都得到减小，这使得高性能CPT原子钟的小型化成为可能。
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| 关 键 词： | 相干布局囚禁 +小型化 CPT原子钟 相干极化调制 |
Structure Design and Performance Study of the Co-conical TEM Cell |
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| HUANG Cheng-zu,QI Wan-quan,LIU Xing-xun,PENG Bo.Structure Design and Performance Study of the Co-conical TEM Cell[J].Journal of Astronautic Metrology and Measurement,2020,39(3):22-26. |
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| Authors: | HUANG Cheng-zu QI Wan-quan LIU Xing-xun PENG Bo |
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| Institution: | 1.National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China;
2.University of Chinese Academy of Sciences,Beijing 100049,China;
3.School of Physics Northwest University,Xi’an 710127,China |
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| Abstract: | This paper develops a co-conical TEM cell to solve the problem about broadband frequency field strength calibration of the field probes.The system can achieve the frequency response and linearity response calibration of the field probes from 200MHz to 40GHz and from 1V/m to 200V/m.This technique lays a foundation for broadband frequency and large dynamic field strength calibration.The mainly research works of this paper are top down structure design of the co-conical TEM cell and experimental verification of the electrical properties. |
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| Keywords: | Co-conical TEM(Transverse Electromagnetic wave) cell Structure design |
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