Magneto-optical trapping of optically pumped metastable europium
Magneto-optical trapping of optically pumped metastable europium
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DOI：
10.1103/physreva.97.061607
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发表时间：
2018-06-18
影响因子：
2.9
通讯作者：
Kozuma, Mikio
中科院分区：
文献类型：
--
作者：
Inoue, Ryotaro;Miyazawa, Yuki;Kozuma, Mikio
我们展示了铕的激光冷却和磁光俘获。原子被光泵浦到亚稳态，然后通过传统的塞曼减慢和磁光捕获技术使用J = 13/2 J = 15/2准循环跃迁从原子束源加载。被捕获的粒子数最多包含1 × 10（7）个原子，根据高密度下原子的非指数损失，两体损失率估计为1 × 10（-10）cm（3）/s。我们还观察到从准循环跃迁到J = 9/2和11/2的两个亚稳态的泄漏，这足以将激光冷却的原子抽回到J = 7/2的基态。
We demonstrate laser cooling and magneto-optical trapping of europium. The atoms are optically pumped to a metastable state and then loaded from an atomic-beam source via conventional Zeeman slowing and magnetooptical trapping techniques using a J = 13/2 J = 15/2 quasicyclic transition. The trapped populations contained up to 1x10(7) atoms, and a two- body loss rate is estimated as 1x10(-10) cm(3)/s from the nonexponential loss of atoms at high densities. We also observed leakage out of the quasicyclic transition to the two metastable states with J = 9/2 and 11/2, which is adequate to pump the laser- cooled atoms back to the J = 7/2 ground state.