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24 October 2017 An expander system of high stable laser beam for cesium atomic fountain clocks
Jiang Chen, Rui Lin, Dandan Liu, Hui Zhang, Jun Ruan, Junru Shi, Fengxiang Yu, Shougang Zhang
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Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 104571Z (2017) https://doi.org/10.1117/12.2284668
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
The quality of the cold atoms sample plays an important role to improve the performance of cesium atomic fountain clocks. The preparation of cold atoms sample has a strict requirement for cooling lasers characteristics such as power stability, polarization, collimation, uniformity and verticality. This work implements a design of an expander system of high stable laser beam for the cold atom preparation. The cooling laser characteristics can be adjusted by the design, and the use of non-magnetic materials to avoid the magnetic field on the impact of cold atom. The cold atom sample with the number of 2×108 and temperature of 5μk was obtained by expander system. The result meets the requirements of the preparation of cold atoms for cesium atomic fountain clocks.
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Jiang Chen, Rui Lin, Dandan Liu, Hui Zhang, Jun Ruan, Junru Shi, Fengxiang Yu, and Shougang Zhang "An expander system of high stable laser beam for cesium atomic fountain clocks", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104571Z (24 October 2017); https://doi.org/10.1117/12.2284668
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KEYWORDS
Clocks
Cesium
Chemical species
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