Magneto–optical trap for neutral mercury atoms

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

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

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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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Magneto–optical trap for neutral mercury atoms

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