Magneto-optical trap for neutral mercury atoms

Due to its low sensitivity to 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...

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Published inChinese physics B Vol. 22; no. 4; pp. 32 - 35
Main Author 刘洪力 尹士奇 刘亢亢 钱军 徐震 洪涛 王育竹
Format Journal Article
LanguageEnglish
Published 01.04.2013
Subjects
Blackbody
Chambers
Clocks
Cold pressing
Fluorescence
Lasers
Mercury (metal)
Optical lattices
Pumps
中性
宾夕法尼亚州
汞原子
激光冷却
磁光阱
荧光检测
超高真空
黑体辐射
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/22/4/043701

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Summary:Due to its low sensitivity to 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 an 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 1.5×10^5 Hg-202 atoms were observed by fluorescence detection.
Bibliography:Liu Hong-Li, Yin Shi-Qi, Liu Kang-Kang , Qian Jun,Xu Zhen, Hong Tao, Wang Yu-Zhu（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
Due to its low sensitivity to 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 an 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 1.5×10^5 Hg-202 atoms were observed by fluorescence detection.
laser cooling and trapping, neutral mercury atom, laser spectroscopy
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/22/4/043701