Frequency stability measurement of a Raman-Ramsey Cs clock

被引：4
|
作者：
Castagna, N. [1 ]
Guerandel, S. [1 ]
Dahes, F. [1 ]
Zanon, T. [1 ]
de Clercq, E. [1 ]
Clairon, A. [1 ]
Dimarcq, N. [1 ]
机构：
[1] Observ Paris, SYRTE, LNE, CNRS,UMR 8630, F-75014 Paris, France
来源：
PROCEEDINGS OF THE 2007 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM-JOINTLY WITH THE 21ST EUROPEAN FREQUENCY AND TIME FORUM, VOLS 1-4 | 2007年
关键词：
D O I：
10.1109/FREQ.2007.4319033
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
CPT clocks are studied worldwide as miniature frequency standards for portable applications. To improve their frequency stability, we have investigated the optimum operating conditions (cell temperature, laser intensity, interrogation method) and measured the corresponding frequency shifts and stability. Compared to the continuous CPT interrogation, the pulsed interrogation reduces the light shift by a factor 300 and improves the frequency stability by a factor 10. The short term frequency stability is 9 x 10(-13) at 1 s, limited to 2 x 10(-13) after 300 s.
引用
收藏
页码：67 / 70
页数：4
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