Emergence from nonrelativistic strong-field rescattering to ultrastrong-field laser-atom physics: A semiclassical analysis

被引：46

作者：

Palaniyappan, S. ^{[1
]}

Ghebregziabher, I. ^{[1
]}

DiChiara, A. ^{[1
]}

MacDonald, J. ^{[1
]}

Walker, B. C. ^{[1
]}

机构：

[1] Univ Delaware, Newark, DE 19716 USA

来源：

PHYSICAL REVIEW A | 2006年 / 74卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.74.033403

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss a rescattering deflection parameter to gauge the progression from strong- to ultrastrong-field rescattering dynamics. Our analytical and numerical treatments of rescattering quantify the change from nonrelativistic, dipole approximation strong-field dynamics to an ultrastrong-field interaction where nu/c not equal 0 and B-laser not equal 0. At the threshold between these two regimes the Lorentz deflection reduces the returning electron flux at the core and suppresses rescattering related phenomena. Both radiation and nonsequential ionization from rescattering are studied. We show the ultrastrong-field regime can occur at intensities as low as 10(14) W/cm(2) for mid-IR (2 mu m to 5 mu m) wavelengths or as high as 10(18) W/cm(2) for UV radiation.

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页数：8

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