Title :
Design and preliminary results of NIM cesium fountain primary frequency standard
Author :
Liji, Wang ; Changhua, Wu ; Bingying, Huang ; Mingshou, Li ; Jin, Qian ; Wangxi, Ji
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
Abstract :
We have designed and constructed a cesium fountain as our new generation primary frequency standard. Serial performance measurements of components and assemblies are finished. A cold atomic cloud with diameter 1.5 mm and temperature ⩽150 μK has been observed in a magneto-optical trap set-up. It is used to obtain the optical molasses designed for the fountain clock
Keywords :
atomic clocks; frequency standards; laser cooling; magneto-optical effects; radiation pressure; 1.5 mm; 150 muK; Cs; NIM cesium fountain primary frequency standard; cold atomic cloud; design; magneto-optical trap; optical molasses; primary frequency standard; Atom lasers; Atom optics; Atomic measurements; Clocks; Fluorescence; Frequency; Laser transitions; Magnetic shielding; Optical modulation; Power lasers;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840700
