Title :
Progress on the construction of an atomic cesium fountain at NIM
Author :
Tianchu, Li ; Mingshou, Li ; Bingying, Huang ; Jin, Qian ; Pingwei, Lin
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
fDate :
6/23/1905 12:00:00 AM
Abstract :
An atomic cesium fountain has been designed for a new primary standard of frequency in China. Cold atomic clouds collected in the magneto-optical trap (MOT) were previously reported (1995). To further improve the performance of the MOT we have optimized the laser-optical system and operation of the MOT. Some optical elements were replaced with new ones with better quality; frequency stabilization of lasers and arrangement of the optical system was modified; and polarization maintaining (PM) optical fibers were adopted to transfer lights from the optical system to MOT. We also installed the fluorescence detecting - amplifying assembles to take the time of flight (TOF) measurement of the cold atoms
Keywords :
atomic beams; caesium; frequency stability; frequency standards; magneto-optical devices; China; Cs; atomic Cs fountain; cold atomic clouds; cold atoms; fluorescence detection; frequency stabilization; frequency standard; laser-optical system; polarization maintaining optical fibers; primary standard; time of flight measurement; Atom optics; Atomic beams; Atomic measurements; Clouds; Fiber lasers; Frequency; Laser stability; Optical fiber polarization; Optical fibers; Stimulated emission;
Conference_Titel :
Frequency Control Symposium and PDA Exhibition, 2001. Proceedings of the 2001 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-7028-7
DOI :
10.1109/FREQ.2001.956169
