Study of pulsed optically pumped Rb frequency standard

被引：0

作者：

Du, Zhijing ^{[1
,2
]}

Zhao, Wenyu ^{[1
,2
]}

Liu, Jie ^{[1
,2
]}

Zhang, Shougang ^{[1
]}

机构：

[1] Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, 3 Shuyuandong Road, Xi'an 710600, China

[2] Graduate University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049, China

来源：

Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University | 2011年 / 36卷 / 10期

关键词：

Frequency standards - Light absorption - Microwave oscillators - Optical pumping - Microwaves;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The pulsed optically pumped (POP) 87Rb vapor-cell frequency standard was studied based on the detection of free induction microwave signal or optical absorption signal. In POP operation the pumping, interrogation, and detection phases are separated in time, avoiding the coupling between microwave and optical coherence. The theoretical results show that an oscillation period doubled with respect to the classical Ramsey method which leads to a doubled atomic quality factor Q, and the reduction of optical shift and cavity pulling shift will be obtained, when the atoms are submitted to π/2 Ramsey microwave pulse. In experiment Ramsey fringes were obtained with a clock prototype based on 87Rb in buffer gas, with bandwidth of 65 Hz and 150 Hz for microwave and optical signal respectively. The frequency stability achieved was 1.2×10-12 for measurement times up to 100 s.

引用

页码：1136 / 1240

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