Magneto-optical trapping of ytterbium atoms with a 398.9 nm laser
Magneto-optical trapping of ytterbium atoms with a 398.9 nm laser
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DOI：
10.1088/0256-307x/25/10/030
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发表时间：
2008-10
影响因子：
3.5
通讯作者：
Zhao Peng-yi;Xiong Zhuan-Xian;Liang Jie;He Ling-Xiang;Lu Bao-Long
中科院分区：
文献类型：
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作者：
Zhao Peng-yi;Xiong Zhuan-Xian;Liang Jie;He Ling-Xiang;Lu Bao-Long
报道了在398.9nm处实现的镱磁光阱（MOT），它工作在偶极允许的（1）So - P-1（1）跃迁上。MOT由塞曼减速器产生的减速原子束加载。Yb原子的所有七种稳定同位素都可以在不同的激光失谐量下分别被捕获。MOT中收集了超过10（7）个Yb-174原子，而费米子同位素Yb-171的原子数大约为2.3 x 10（6），丰度较低。如果没有塞曼减速器，被俘获的原子数就会低一个数量级。偶、奇同位素都被认为是光钟跃迁的最佳候选者，因此用蓝色MOT对镱原子进行冷却和俘获是建立光钟的重要步骤。
We report the realization of ytterbium magneto-optical trap (MOT) operating on the dipole-allowed (1)So - P-1(1) transition at 398.9 nm. The MOT is loaded by a slowed atomic beam produced by a Zeeman slower. All seven stable isotopes of Yb atoms could be trapped separately at different laser detuning values. Over 10(7) Yb-174 atoms are collected in the MOT, whereas the atom number of fermionic isotope Yb-171 is roughly 2.3 x 10(6) clue to a lower abundance. Without the Zeeman slower, the trapped atom numbers are one order of magnitude lower. Both the even and odd isotopes are recognized as excellent candidates of optical clock transition, so the cooling and trapping of ytterbium atoms by the blue MOT is an important step for building an optical clock.