Efficient repumping of a Ca magneto-optical trap
Efficient repumping of a Ca magneto-optical trap
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Ca 磁光陷阱的高效再泵浦
DOI：
10.1103/physreva.96.033402
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发表时间：
2017-09
影响因子：
2.9
通讯作者：
Eric R. Hudson
中科院分区：
文献类型：
--
作者：
Michael Mills;Prateek Puri;Yan-Mei Yu;Andrei Derevianko;Christian Schneider;Eric R. Hudson
我们调查的限制因素，在标准实施的钙磁光阱。我们发现，从4s 5 p 1 P1态的相互组合跃迁用于从3d 4s 1D 2态再泵浦电子布居，严重降低了陷阱寿命。我们探索七种替代的再泵浦方案理论和实验研究其中五个。我们发现，所有这五个方案产生的陷阱寿命显着增加，从而提高原子数和峰值原子密度高达~ 20倍和~ 6倍，分别。这些转变之一，在453 nm处，示出接近的基本限制的钙磁光阱与再泵浦仅从3d 4s 1D 2状态，产生的陷阱寿命为~5秒。
We investigate the limiting factors in the standard implementation of the Ca magneto-optical trap. We find that intercombination transitions from the 4s5p 1P1 state used to repump electronic population from the 3d4s 1D2 state severely reduce the trap lifetime. We explore seven alternative repumping schemes theoretically and investigate five of them experimentally. We find all five of these schemes yield a significant increase in trap lifetime and consequently improve the number of atoms and peak atom density by as much as ~20x and ~6x, respectively. One of these transitions, at 453 nm, is shown to approach the fundamental limit for a Ca magneto-optical trap with repumping only from the 3d4s 1D2 state, yielding a trap lifetime of ~5 s.
影响因子：
64.8
作者：
L. Elton
通讯作者：
L. Elton