Ramsey-CPT spectrum with the Faraday effect and its application to atomic clocks

A method that obtains the Ramsey-coherent population trapping （CPT） spectrum with the Faraday effect is investi- gated. An experiment is implemented to detect the light polarization components generated from the Faraday effect. The experimental results agree with the theoretical calculations based o...

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Published inChinese physics B Vol. 24; no. 6; pp. 279 - 283
Main Author 田原 谭伯仲 杨晶 张奕 顾思洪
Format Journal Article
LanguageEnglish
Published 01.06.2015
Subjects
Atomic clocks
Faraday effect
Frequency stability
Liouville equations
Liouville方程
Mathematical analysis
Polarization
Trapping
光谱
原子钟
应用
拉姆齐
法拉第效应
相干俘获
频率稳定性
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Summary:A method that obtains the Ramsey-coherent population trapping （CPT） spectrum with the Faraday effect is investi- gated. An experiment is implemented to detect the light polarization components generated from the Faraday effect. The experimental results agree with the theoretical calculations based on the Liouville equation. By comparing with the method without using the Faraday effect, the potential of this method for a CPT-based atomic clock is assessed. The results indicate that this method should improve the short-term frequency stability by several times.
Bibliography:Tian Yuan, Tan Bo-Zhong, Yang Jing, Zhang Yi and Gu Si-Hong（ a） School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China b） Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Clu＇nese Academy of Sciences, Wuhan 430071, China c） School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
A method that obtains the Ramsey-coherent population trapping （CPT） spectrum with the Faraday effect is investi- gated. An experiment is implemented to detect the light polarization components generated from the Faraday effect. The experimental results agree with the theoretical calculations based on the Liouville equation. By comparing with the method without using the Faraday effect, the potential of this method for a CPT-based atomic clock is assessed. The results indicate that this method should improve the short-term frequency stability by several times.
11-5639/O4
Faraday effect, Ramsey-CPT, atomic clock, frequency stability
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/6/063302