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Chin. Phys. B, 2013, Vol. 22(4): 043701    DOI: 10.1088/1674-1056/22/4/043701
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Magneto–optical trap for neutral mercury atoms

Liu Hong-Li (刘洪力)a, Yin Shi-Qi (尹士奇)a, Liu Kang-Kang (刘亢亢)a, Qian Jun (钱军)a, Xu Zhen (徐震)a, Hong Tao (洪涛)b, Wang Yu-Zhu (王育竹)a b
a Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
b Center for Macroscopic Quantum Phenomena, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
Abstract  Due to the low sensitivity to the blackbody radiation, neutral mercury is a good candidate for the most accurate optical lattice clock. Here we report the observation of cold mercury atoms in a magneto–optical trap (MOT). Because of the high vapor pressure at room temperature, the mercury source and the cold pump were cooled down to -40 ℃ and -70 ℃, respectively, to keep the science chamber in ultra-high vacuum of 6×10-9 Pa. Limited by the power of the UV cooling laser, the one beam folded MOT configuration was adopted, and 1.5×105 Hg-202 atoms were observed in the fluorescence detection.
Keywords:  laser cooling and trapping      neutral mercury atom      laser spectroscopy  
Received:  26 October 2012      Revised:  04 December 2012      Accepted manuscript online: 
PACS:  37.10.Gh (Atom traps and guides)  
  37.10.De (Atom cooling methods)  
  32.30.Jc (Visible and ultraviolet spectra)  
Fund: Project supported by the Research Project of Shanghai Science and Technology Commission, China (Grant No. 09DJ1400700), the National Natural Science Foundation of China (Grant Nos. 10974211 and 11104292), and the National Basic Research Program of China (Grant No. 2011CB921504).
Corresponding Authors:  Xu Zhen, Wang Yu-Zhu     E-mail:  xuzhen@siom.ac.cn; yzwang@mail.shcnc.ac.cn

Cite this article: 

Liu Hong-Li (刘洪力), Yin Shi-Qi (尹士奇), Liu Kang-Kang (刘亢亢), Qian Jun (钱军), Xu Zhen (徐震), Hong Tao (洪涛), Wang Yu-Zhu (王育竹) Magneto–optical trap for neutral mercury atoms 2013 Chin. Phys. B 22 043701

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