We achieved a low-cost and small-sized Rb optical frequency standard based on 85Rb 5S1/2 → 6P3/2 transition with 10−15 stability, which is comparable with that of the best 532 nm I2 optical frequency standards. In this system, we directly lock the 420 nm diode laser on the 5S1/2 F = 3 → 6P3/2 = 4 hyperfine transition line without an additional Pound-Drever-Hall pre-locking system. The signal-to-noise-ratio reaches as high as 350 000 when the averaging time is at 1 s. Eventually by the fluctuation of the residual error signal after locking, the preliminary stability of the optical frequency standard reaches , decreasing to 2.1 × 10−15 at 80 s. It shows potential in stability performance, experimental cost, and system volume compared with the 532 nm I2 optical frequency standard as a wavelength standard. It also opens a door for the achievement of wavelength standards by using higher excited states of alkalies.
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October 2017
Research Article|
October 16 2017
Compact Rb optical frequency standard with 10−15 stability
Shengnan Zhang;
Shengnan Zhang
1
State Key Laboratory of Advanced Optical Communication Systems and Networks, and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University
, Beijing 100871, China
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Xiaogang Zhang;
Xiaogang Zhang
1
State Key Laboratory of Advanced Optical Communication Systems and Networks, and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University
, Beijing 100871, China
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Jingzhong Cui;
Jingzhong Cui
a)
2
National Key Laboratory of Science and Technology on Vacuum Technology and Physics, Lanzhou Institute of Physics, CAST
, Lanzhou, Gansu 730000, China
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Zhaojie Jiang;
Zhaojie Jiang
1
State Key Laboratory of Advanced Optical Communication Systems and Networks, and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University
, Beijing 100871, China
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Haosen Shang;
Haosen Shang
1
State Key Laboratory of Advanced Optical Communication Systems and Networks, and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University
, Beijing 100871, China
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Chuanwen Zhu;
Chuanwen Zhu
1
State Key Laboratory of Advanced Optical Communication Systems and Networks, and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University
, Beijing 100871, China
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Pengyuan Chang;
Pengyuan Chang
1
State Key Laboratory of Advanced Optical Communication Systems and Networks, and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University
, Beijing 100871, China
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Ling Zhang;
Ling Zhang
2
National Key Laboratory of Science and Technology on Vacuum Technology and Physics, Lanzhou Institute of Physics, CAST
, Lanzhou, Gansu 730000, China
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Jianhui Tu;
Jianhui Tu
2
National Key Laboratory of Science and Technology on Vacuum Technology and Physics, Lanzhou Institute of Physics, CAST
, Lanzhou, Gansu 730000, China
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Jingbiao Chen
Jingbiao Chen
b)
1
State Key Laboratory of Advanced Optical Communication Systems and Networks, and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University
, Beijing 100871, China
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Rev. Sci. Instrum. 88, 103106 (2017)
Article history
Received:
May 28 2017
Accepted:
September 27 2017
Citation
Shengnan Zhang, Xiaogang Zhang, Jingzhong Cui, Zhaojie Jiang, Haosen Shang, Chuanwen Zhu, Pengyuan Chang, Ling Zhang, Jianhui Tu, Jingbiao Chen; Compact Rb optical frequency standard with 10−15 stability. Rev. Sci. Instrum. 1 October 2017; 88 (10): 103106. https://doi.org/10.1063/1.5006962
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