The experiments on the laser cooling and trapping of ytterbium atoms are reported, including the two-dimensional transversal cooling, longitudinal velocity Zeeman deceleration, and a magneto-optical trap with a broadband transition at a wavelength of 399 nm. The magnetic field distributions along the axis of a Zeeman slower were measured and in a good agreement with the calculated results. Cold ytterbium atoms were produced with a number of about 107 and a temperature of a few milli-Kelvin. In addition, using a 556-nm laser, the excitations of cold ytterbium atoms at 1S0-3P1 transition were observed. The ytterbium atoms will be further cooled in a 556-nm magneto-optical trap and loaded into a three-dimensional optical lattice to make an ytterbium optical clock.
. Laser cooling and trapping of ytterbium atoms[J]. Frontiers of Physics in China, 2009, 4(2): 160-164.
Xin-ye XU (徐信业), Wen-li WANG (王文丽), Qing-hong ZHOU (周庆红), Guo-hui LI (李国辉), Hai-ling JIANG (蒋海灵), Lin-fang CHEN (陈林芳), Jie YE (叶捷), Zhi-hong ZHOU (周志红), Yin CAI (蔡寅), Hai-yao TANG (唐海瑶), Min ZHOU (周敏). Laser cooling and trapping of ytterbium atoms. Front Phys Chin, 2009, 4(2): 160-164.
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