Magneto–optical trap for neutral mercury atoms

doi:10.1088/1674-1056/22/4/043701

中国物理B ›› 2013, Vol. 22 ›› Issue (4): 43701-043701.doi: 10.1088/1674-1056/22/4/043701

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Magneto–optical trap for neutral mercury atoms

刘洪力^a, 尹士奇^a, 刘亢亢^a, 钱军^a, 徐震^a, 洪涛^b, 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

收稿日期:2012-10-26 修回日期:2012-12-04 出版日期:2013-03-01 发布日期:2013-03-01
基金资助:
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).

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

Received:2012-10-26 Revised:2012-12-04 Online:2013-03-01 Published:2013-03-01
Contact: Xu Zhen, Wang Yu-Zhu E-mail:xuzhen@siom.ac.cn; yzwang@mail.shcnc.ac.cn
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: laser cooling and trapping, neutral mercury atom, laser spectroscopy

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.

Key words: laser cooling and trapping, neutral mercury atom, laser spectroscopy

中图分类号: (Atom traps and guides)

37.10.Gh

37.10.De (Atom cooling methods) 32.30.Jc (Visible and ultraviolet spectra)

刘洪力, 尹士奇, 刘亢亢, 钱军, 徐震, 洪涛, 王育竹. Magneto–optical trap for neutral mercury atoms[J]. 中国物理B, 2013, 22(4): 43701-043701.

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[J]. Chin. Phys. B, 2013, 22(4): 43701-043701.

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Magneto–optical trap for neutral mercury atoms

Magneto–optical trap for neutral mercury atoms

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