Deep optical trap for cold alkaline-Earth atoms.
Deep optical trap for cold alkaline-Earth atoms.
复制标题
冷碱土原子的深光陷阱。
DOI：
10.1364/oe.16.002909
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发表时间：
2008
期刊：
影响因子：
3.8
通讯作者：
F. Cruz
中科院分区：
文献类型：
--
作者：
L. S. Cruz;M. Sereno;F. Cruz
我们描述了一个深的光学偶极陷阱或晶格设计的温度为几mK，如碱土金属原子，只经历了定期多普勒冷却的原子。我们使用外光腔将3.2 W的532 nm单频激光放大到523 W。几千瓦的功率，可达到低损耗光学或更高的输入功率，允许更大的陷阱体积，改善原子转移的磁光陷阱。我们分析了深陷阱内冷却的可能性，诱导钙的斯塔克位移，以及使用辅助激光器的相互组合时钟跃迁的取消方案。
We describe a setup for a deep optical dipole trap or lattice designed for holding atoms at temperatures of a few mK, such as alkaline-Earth atoms which have undergone only regular Doppler cooling. We use an external optical cavity to amplify 3.2 W from a commercial single-frequency laser at 532 nm to 523 W. Powers of a few kW, attainable with low-loss optics or higher input powers, allow larger trap volumes for improved atom transfer from magneto-optical traps. We analyze possibilities for cooling inside the deep trap, the induced Stark shifts for calcium, and a cancellation scheme for the intercombination clock transition using an auxiliary laser.