TEMPORAL EFFECTS IN MULTIPHOTON IONIZATION OF LITHIUM

被引：12

作者：

STORY, JG

GALLAGHER, TF

机构：

[1] Department of Physics, University of Virginia, Charlottesville

来源：

PHYSICAL REVIEW A | 1993年 / 47卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.47.5037

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The temporal effects of multiphoton ionization are investigated using a two-color method which determines both the time and intensity at which the process occurs. We show that the total ionization efficiency depends strongly on the time at which an atom makes a transition to an excited state during an intense laser pulse. This result clearly shows that the ac-Stark-shifted bound-state resonances not only enhance the cross section for photoionization, but that the excited bound states provide temporary storage states for the atomic population during the photoionization process.

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页码：5037 / 5040

页数：4

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