VERIFICATION OF THE DOMINANT ROLE OF RESONANT ENHANCEMENT IN SHORT-PULSE MULTIPHOTON IONIZATION

被引：56

作者：

GIBSON, GN ^{[1
]}

FREEMAN, RR ^{[1
]}

MCILRATH, TJ ^{[1
]}

机构：

[1] UNIV MARYLAND,INST PHYS SCI & TECHNOL,COLL PK,MD 20742

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.69.1904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report experimental results which imply that observed peaks in the short-pulse photoelectron spectrum of atoms in high fields result only from a resonant enhancement of the multiphoton ionization rate at the peak of the laser pulse, rather than a two-step process of real population transfer and subsequent single-photon ionization. These results consist of the first identification, in a high intensity (> 10(13) W/cm2) short-pulse photoelectron spectrum, of low-lying states of argon with an ac Stark shift significantly different from the ponderomotive energy.

引用

页码：1904 / 1907

页数：4

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