Evaluation of the frequency instability limited by Dick effect in the microwave ~(199)Hg~+ trapped-ion clock |
| |
| Affiliation: | 1. Key Laboratory of Atomic Frequency Standards(KLAFS), Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
2. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
3. University of the Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | In the microwave 199Hg+ trapped-ion clock, the frequency instability degradation caused by the Dick effect is unavoidable because of the periodical interrogating field. In this paper, the general expression of the sensitivity function g(t) to the frequency fluctuation of the interrogating field with Nπ-pulse (N is odd) is derived. According to the measured phase noise of the 40.5-GHz microwave synthesizer, the Dick-effect limited Allan deviation of our 199Hg+ trapped-ion clock is worked out. The results indicate that the limited Allan deviations are about 1.75×10-13/√τ and 3.03×10-13/√τ respectively in the linear ion trap and in the two-segment extended linear ion trap under our present experimental parameters. |
| |
| Keywords: | Dick effect 199Hg+ trapped-ion clock Allan deviation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
