Enhanced optical molasses cooling for Cs atoms with largely detuned cooling lasers

Enhanced optical molasses cooling for Cs atoms with largely detuned cooling lasers
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使用很大程度上失谐的冷却激光器增强 Cs 原子的光学糖蜜冷却

DOI:
10.1088/1674-1056/ab5fc6
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发表时间:
2020-02
期刊:
影响因子:
1.7
通讯作者:
Suo-Tang Jia
Suo-Tang Jia
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Di Zhang;Yu-Qing Li;Yun-Fei Wang;Yong-Ming Fu;Peng Li;Wen-Liang Liu;Ji-Zhou Wu;Jie Ma;Lian-Tuan Xiao;Suo-Tang Jia

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我们报告了一个详细的研究增强光学糖蜜冷却Cs原子,其大的超精细结构允许使用很大程度上红失谐冷却激光器。我们发现,冷却激光器的约-110 MHz的大频率失谐与冷却和再泵浦激光器的功率的适当控制相结合,可以达到约5.5 μK的冷温度。我们得到了5.1× 107个原子,其数密度约为1× 1012 cm-3。我们的结果得到了比其他实验更低的温度,在其他实验中,冷Cs原子的温度为10 μK,通过光学糖蜜冷却。
We report a detailed study of the enhanced optical molasses cooling of Cs atoms, whose large hyperfine structure allows to use the largely red-detuned cooling lasers. We find that the combination of a large frequency detuning of about− 110 MHz for the cooling laser and a suitable control for the powers of the cooling and repumping lasers allows to reach a cold temperature of∼ 5.5 μK. We obtain 5.1× 10 7 atoms with the number density around 1× 10 12 cm− 3. Our result gains a lower temperature than that got in other experiments, in which the cold Cs atoms with the temperature of∼ 10 μK have been achieved by the optical molasses cooling.
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发表时间: 1989-11
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