ABOVE-THRESHOLD IONIZATION OF CESIUM UNDER FEMTOSECOND LASER-PULSES - NEW SUBSTRUCTURE DUE TO STRONGLY COUPLED BOUND-STATES

被引：36

作者：

NICKLICH, W

KUMPFMULLER, H

WALTHER, H

TANG, X

XU, HL

LAMBROPOULOS, P

机构：

[1] UNIV MUNICH,SCH PHYS,W-8046 GARCHING,GERMANY

[2] UNIV SO CALIF,DEPT PHYS,LOS ANGELES,CA 90089

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.69.3455

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

First above-threshold-ionization (ATI) spectra on cesium atoms obtained with laser pulses as short as 70 fs are presented. Up to 7 ATI peaks exhibiting new substructure related to the extremely large Rabi coupling between the ground and first excited states have been detected. The angular and intensity dependence of the ATI signal has been studied. It is shown that the ATI peaks shift to higher electron energies with rising laser intensity. The obtained results are compared with a perturbative as well as a nonperturbative theory which predicts the substructure.

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页码：3455 / 3458

页数：4

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