Effect of external magnetic field on the shift of resonant frequency in photoassociation of ultracold Cs atoms

Effect of external magnetic field on the shift of resonant frequency in photoassociation of ultracold Cs atoms
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外磁场对超冷Cs原子光缔合共振频率漂移的影响

DOI:
10.1088/1674-1056/28/1/013702
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发表时间:
2019-01
期刊:
影响因子:
1.7
通讯作者:
Jia Suotang
Jia Suotang
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Li Pengwei;Li Yuqing;Feng Guosheng;Wu Jizhou;Ma Jie;Xiao Liantuan;Jia Suotang

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研究了外磁场对超冷Cs原子在磁悬浮光交叉偶极阱中光缔合共振频率漂移的影响。通过记录Cs分子在6S_(1/2)+6P_(1/2)离解极限以下的长程0 u ~+态在不同磁场下的光缔合光谱,测量了光缔合激光强度增加时,光缔合频率的线性变化.光缔合激光的强度的频移的斜率表现出强烈的依赖于外部磁场。采用解析理论模型对实验数据进行了模拟,在该模型中引入了阱深可调的单通道矩形势,得到了磁场对发生光缔合作用的有效范围内原子行为的影响。
We study the influence of external magnetic field on the shift of the resonant frequency in the photoassociation of ultracold Cs atoms, which are captured in a magnetically levitated optical crossed dipole trap. With the increase of the photoassociation laser intensity, the linear variation of the frequency shift is measured by recording the photoassociation spectra of the long-range 0 u + state of Cs molecule below the 6S1/2+6P1/2 dissociation limit at different magnetic fields. The slope of the frequency shift to the intensity of the photoassociation laser exhibits a strong dependence on the external magnetic field. The experimental data is simulated with an analytic theory model, in which a single channel rectangular potential with the tunable well depth is introduced to acquire the influence of the magnetic field on the atomic behavior in the effective range where photoassociation occurs.
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影响因子: 2.9
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