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arXiv physics/0406018physics.atom-ph
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Ca ~(2+)1 S_0 - 3 P_1跃迁的交流斯塔克位移与波长的关系

Wavelength dependent ac-Stark shift of the 1S0 - 3P1 transition at 657 nm in Ca

Carsten Degenhardt, Hardo Stoehr, Uwe Sterr, Fritz Riehle, Christian Lisdat

摘要:

用时域Ramsey-Borde原子干涉仪测量了~(40)Ca中4s_2 ~ 1 S_0 - 4s_4p ~ 3 P_1线在780 ~ 1064 nm激光波长范围内的交流斯塔克位移。在800.8(22)nm处发现了mS = 0 - mP = 0跃迁位移的零交叉和σ偏振微扰。通过从已知的跃迁波长和强度导出能量偏移的模型来分析数据。为了拟合我们的数据,我们调整了4s 3d 3D -4s 4p 3 P和4s 5s 3S -4s 4p 3 P精细结构多重态的爱因斯坦A系数。据此我们可以预言1 S 0 m = 0 - 3 P1 m = 1跃迁的ac-Stark位移消失以及3 P0跃迁的983(12)nm和735.5(20)nm的σ光。

英文摘要:

We have measured the ac-Stark shift of the 4s2 1S0 - 4s4p 3P1 line in 40Ca for perturbing laser wavelengths between 780 nm and 1064 nm with a time domain Ramsey-Borde atom interferometer. We found a zero crossing of the shift for the mS = 0 - mP = 0 transition and σpolarized perturbation at 800.8(22) nm. The data was analyzed by a model deriving the energy shift from known transition wavelengths and strengths. To fit our data, we adjusted the Einstein A coefficients of the 4s3d 3D - 4s4p 3P and 4s5s 3S - 4s4p 3P fine structure multiplets. With these we can predict vanishing ac-Stark shifts for the 1S0 m = 0 - 3P1 m = 1 transition and σ- light at 983(12) nm and at 735.5(20) nm for the transition to the 3P0 level.

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