Dick Effect in a Microwave Frequency Standard Based on Laser-Cooled 113^Cd＋ Ions

The Dick effect is one of the main limits to the frequency stability of a passive frequency standard, especially for the fountain clock and ion dock operated in pulsed mode which require unavoidable dead time during interrogation. Here we measure the phase noise of the interrogation oscillator appli...

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Bibliographic Details
Published in中国物理快报：英文版 no. 1; pp. 27 - 29
Main Author ZHANG Jian-Wei MIAO Kai WANG Li-Jun
Format Journal Article
LanguageEnglish
Published 2015
Subjects
微波
本地振荡器
死区时间
激光冷却
脉冲模式
镉离子
频率标准
频率稳定性
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Summary:The Dick effect is one of the main limits to the frequency stability of a passive frequency standard, especially for the fountain clock and ion dock operated in pulsed mode which require unavoidable dead time during interrogation. Here we measure the phase noise of the interrogation oscillator applied in the microwave frequency standard based on laser-cooled 113^Cd＋ ions, and analyze the Allan deviation limited by the Dick effect. The results indicate that the Dick effect is one of the key issues for the cadmium ion dock to reach expected frequency stability. This problem can be resolved by interrogating the local oscillator continuously with two ion traps.
Bibliography:11-1959/O4
The Dick effect is one of the main limits to the frequency stability of a passive frequency standard, especially for the fountain clock and ion dock operated in pulsed mode which require unavoidable dead time during interrogation. Here we measure the phase noise of the interrogation oscillator applied in the microwave frequency standard based on laser-cooled 113^Cd＋ ions, and analyze the Allan deviation limited by the Dick effect. The results indicate that the Dick effect is one of the key issues for the cadmium ion dock to reach expected frequency stability. This problem can be resolved by interrogating the local oscillator continuously with two ion traps.
ISSN:0256-307X
1741-3540