M. Gorris-Neveaux, P. Monnot, S. Saltiel, M. Ducloy, R. Barbé, J. Keller
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引用次数: 9
摘要
讨论了三能级反射光谱在汽介电界面上观测直接双光子诱导色散的条件。其中一项显示了泵频调制如何允许人们区分与原子准平行移动到介电界面相关的双光子奇异贡献，从而在选择性反射中挑选出非共振无多普勒双光子色散。在铯的6S-6P-8S跃迁中，我们用一种非微扰理论方法预测了双光子共振的动态Stark位移。@s1050——2947 ~ 96 !06009 - x #
The conditions of observation of direct two-photon-induced dispersion in three-level reflection spectroscopy at a vapor-dielectric interface are discussed. One shows how pump frequency modulation allows one to discriminate the two-photon singular contribution associated with atoms moving quasiparallel to the dielectric interface, and therefore single out off-resonant Doppler-free two-photon dispersion in selective reflection. A nonperturbative theoretical approach to two-photon reflection is shown to predict a dynamic Stark shift of the two-photon resonance, which has been experimentally observed on the 6S-6P-8S transition of cesium. @S1050-2947~96!06009-X#
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