Title :
Development of a cesium atomic fountain frequency standard
Author :
Kwon, Taeg Yong ; Lee, Ho Seong ; Yang, Sung Hoon ; Park, Sang Eon
Author_Institution :
Time & Frequency Lab., Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea
fDate :
4/1/2003 12:00:00 AM
Abstract :
We report on the development of a cesium atomic fountain frequency standard at the Korea Research Institute of Standards and Science (KRISS). Cesium atoms were launched upwards by using an optical moving molasses method after they were cooled in a magnetooptical trap. The temperature of launched atoms was about 2.5 μK. From our cesium atomic fountain, we were able to observe Ramsey fringes of 1 Hz linewidth on the 9.2 GHz clock transition of cesium atoms.
Keywords :
caesium; fluorescence; frequency standards; laser cooling; magneto-optical effects; 1 Hz; 2.5 muK; 9.2 GHz; Cs; Ramsey fringe linewidth; atomic clock transitions; cesium atom launching; cesium atomic fountain frequency standards; fluorescence; laser cooled atoms; laser cooling; launched atom temperature; magnetooptical traps; optical moving molasses methods; Atom lasers; Atom optics; Atomic beams; Charge carrier processes; Coils; Fluorescence; Frequency; Laboratories; Magnetic shielding; Standards development;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2003.811680
