外文题目: Initial Tests of a Rubidium Space Cold Atom Clock
作者: 李琳; 屈求智; 汪斌; 李唐; 赵剑波; 吉经纬; 任伟; 赵鑫; 叶美凤; 姚媛媛; 吕德胜; 刘亮
刊名: Chin. Phys. Lett.
年: 2016 卷: 33 期: 6 文章编号：63201
英文关键词:

CESIUM FOUNTAIN; SYSTEM
英文摘要:
We report the initial test results of a rubidium ((87) Rb) space cold atom clock (SCAC). The space-qualified (87) Rb SCAC is composed of the physical package, the optical bench, the microwave synthesizer and the control electronics. After the system is integrated, about 10(8) (87) Rb cold atoms are captured by magneto-optical trap. The linewidth of the Ramsey fringe is about 10 Hz for the free evolution time of 50 ms on the ground, and the signal-to-noise ratio is measured to be larger than 300. We demonstrate a good medium-term fractional frequency stability of 1.5 x 10(-14)@1000 s in the closed-loop operation on the ground. The main effects of the noise on the stability are also presented, and the optimized operating parameter is analyzed for the operation of SCAC in the microgravity environment.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1088/0256-307X/33/6/063201


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