Frequency-dependent polarizabilities of alkali-metal atoms from ultraviolet through infrared spectral regions
Frequency-dependent polarizabilities of alkali-metal atoms from ultraviolet through infrared spectral regions
复制标题
碱金属原子从紫外到红外光谱区域的频率相关极化率
DOI：
10.1103/physreva.73.022505
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发表时间：
2005
影响因子：
2.9
通讯作者：
C. Clark
中科院分区：
文献类型：
--
作者：
M. Safronova;B. Arora;C. Clark
我们给出了波长范围为300-1600 nm的所有碱金属原子的频率相关极化率的第一性原理计算结果，特别注意了普通红外激光器的波长。我们将我们的结果参数化，使它们可以精确地扩展到800nm以上的任意波长。这项工作的动机是最近的实验涉及两种不同的碱金属物种的同时光学捕获。我们的数据可以用来预测光捕获原子的振荡频率，特别是在同一陷阱中不同种类的频率之比。我们确定了两个不同的碱金属原子具有相同振荡频率的波长。
We present results of first-principles calculations of the frequency-dependent polarizabilities of all alkali-metal atoms for light in the wavelength range 300-1600 nm, with particular attention to wavelengths of common infrared lasers. We parametrize our results so that they can be extended accurately to arbitrary wavelengths above 800 nm. This work is motivated by recent experiments involving simultaneous optical trapping of two different alkali-metal species. Our data can be used to predict the oscillation frequencies of optically trapped atoms, and particularly the ratios of frequencies of different species held in the same trap. We identify wavelengths at which two different alkali-metal atoms have the same oscillation frequency.