Strong-field photoionization revisited

被引：424

作者：

Blaga, C. I. ^{[1
,2
]}

Catoire, F. ^{[1
]}

Colosimo, P. ^{[1
]}

Paulus, G. G. ^{[3
,4
]}

Muller, H. G. ^{[5
]}

Agostini, P. ^{[1
]}

DiMauro, L. F. ^{[1
]}

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[2] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[3] Univ Jena, Inst Opt & Quantum Elect, D-07743 Jena, Germany

[4] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[5] FOM AMOLF, NL-1098 SJ Amsterdam, Netherlands

来源：

NATURE PHYSICS | 2009年 / 5卷 / 05期

基金：

美国国家科学基金会;

关键词：

ABOVE-THRESHOLD IONIZATION;

D O I：

10.1038/NPHYS1228

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Over the past thirty years, extensive studies of strong-field photoionization of atoms have revealed both quantum and classical aspects including above-threshold ionization(1), electron wave-packet drift, quiver and rescattering motions. Increasingly sophisticated spectroscopic techniques(2) and sculpted laser pulses(3) coupled with theoretical advances have led to a seemingly complete picture of this fundamental laser-atom interaction. Here, we describe an effect that seems to have escaped observation: the photoelectron energy distribution manifests an unexpected characteristic spike-like structure at low energy, which becomes prominent using mid-infrared laser wavelengths (lambda > 1.0 mu m). The low-energy structure is observed in all atoms and molecules investigated and thus seems to be universal. The structure is qualitatively reproduced by numerical solutions of the time-dependent Schrodinger equation but its physical origin is not yet identified.

引用

页码：335 / 338

页数：4