铷原子中的相干烧孔效应

Coherent Hole-burning in Rubidium Vapor

阐述了在87Rb原子气体中进行的模型的相干烧孔现象的实验研究,并给出了简要的理论分析。相干烧孔是把原子相干效应与传统的光学烧孔过程相结合。用一束更强的相干光将饱和跃迁的上能级与原子的第三个能级耦合起来,使其形成Autler-Townes劈裂,于是饱和光将同时激发两群具有不同速度的原子而不再是一群原子,相干烧孔反映在探测光谱上会出现也不止一个烧孔。

The paper is mainly discussing the experimental researchon lanabda mode Coherent Hole-burning （CHB） in atomic rubidium vapor, associated with brief theoretic analysis. Coherent Hole-burning is a new theory that combines the optical hole-burning and atomic coherence. A certain coherent laser will couple atoms on the saturated level and a third level, which can cause an Autler-Townes splitting. Saturating light will stimulate two groups of atoms, with different velocity, not one group. Accordingly, the absorption of the probe light will take on not only one hole-burning.