Saturation of wave-packet interferences: Direct observation of spin precession in potassium atoms

被引：19

作者：

Nicole, C ^{[1
]}

Bouchene, MA ^{[1
]}

Zamith, S ^{[1
]}

Melikechi, N ^{[1
]}

Girard, B ^{[1
]}

机构：

[1] Univ Toulouse 3, IRSAMC, CNRS, UMR 5589,Lab Collis Agregats Reactivite, F-310312 Toulouse 4, France

来源：

PHYSICAL REVIEW A | 1999年 / 60卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.60.R1755

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A sequence of two identical ultrashort laser pulses creates quantum interferences in an atom. In the weak-field regime, the observed beats between interferences arising from various transitions are not a conclusive signature of wave-packet creation. On the contrary, in the saturation regime, the appearance of slow modulation is. We report on the observation of such modulations in atomic potassium in this field regime. The results are explained within the bright-state-dark-state framework. The wave packet corresponds to the precession of the electronic spin and orbital angular momentum. [S1050-2947(99)50209-6].

引用

收藏

页码：R1755 / R1758

页数：4

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