Resonant above-threshold ionization at quantized laser intensities

被引：26

作者：

Gao, J ^{[1
]}

Guo, DS

Wu, YS

机构：

[1] Univ Illinois, Dept Elect Engn, Urbana, IL 61801 USA

[2] So Univ & A&M Coll, Dept Phys, Baton Rouge, LA 70813 USA

[3] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA

来源：

PHYSICAL REVIEW A | 2000年 / 61卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.61.043406

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We argue that quantum electrodynamics dictates resonance phenomena in multiphoton processes as the laser intensity varies. (-)A(-) perturbation theory is developed in which the coupling between an electron and the second quantized laser mode is treated nonperturbatively. As an example, we predict that the above-threshold ionization rate can exhibit resonance at intensities with integer ponderomotive parameter. Such quantum effects may be exploited to calibrate laser intensities.

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页数：5

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