GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS |
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Dependence of the 85Rb coherent population trapping resonance characteristic on the pressure of N2 buffer gas |
Qu Su-Ping (屈苏平), Zhang Yi (张奕), Gu Si-Hong (顾思洪) |
Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China |
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Abstract In order to exploit its potential applications, we experimentally study the dependence of 85Rb-based coherent population trapping (CPT) resonance on N2 buffer gas with 6 vapor cells filled with natural rubidium and N2. The experiments are carried out at different pressures and temperatures, and the results reveal that higher cell temperature makes the resonance more sensitive to N2 pressure. Thus, it is important to choose a proper buffer gas pressure at a given cell temperature. This work provides valuable data for the application of 85Rb CPT resonance with a buffer gas of N2.
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Received: 24 December 2012
Revised: 05 March 2013
Accepted manuscript online:
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PACS:
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95.55.Sh
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(Auxiliary and recording instruments; clocks and frequency standards)
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34.80.Bm
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(Elastic scattering)
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32.70.Jz
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(Line shapes, widths, and shifts)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10927403). |
Corresponding Authors:
Zhang Yi
E-mail: zhangyi@wipm.ac.cn
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Cite this article:
Qu Su-Ping (屈苏平), Zhang Yi (张奕), Gu Si-Hong (顾思洪) Dependence of the 85Rb coherent population trapping resonance characteristic on the pressure of N2 buffer gas 2013 Chin. Phys. B 22 099501
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