Magneto optical trap for neutral mercury atoms  

作　　者：刘洪力 尹士奇 刘亢亢 钱军 徐震 洪涛 王育竹 

机构地区：[1]Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences [2]Center for Macroscopic Quantum Phenomena, Shanghai Advanced Research Institute, Chinese Academy of Sciences

出　　处：《Chinese Physics B》2013年第4期32-35,共4页中国物理B（英文版）

基　　金：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);the National Basic Research Program of China (Grant No. 2011CB921504)

摘　　要：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.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.

关 键 词：laser cooling and trapping neutral mercury atom laser spectroscopy 

分 类 号：O562[理学—原子与分子物理]