Scaling strong-field interactions towards the classical limit

被引：389

作者：

Colosimo, P. ^{[1
]}

Doumy, G. ^{[1
]}

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

Wheeler, J. ^{[1
]}

Hauri, C. ^{[2
]}

Catoire, F. ^{[1
]}

Tate, J. ^{[1
]}

Chirla, R. ^{[1
]}

March, A. M. ^{[1
]}

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

Muller, H. G. ^{[4
]}

Agostini, P. ^{[1
]}

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

机构：

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

[2] CNRS, ENSTA, Ecole Polytech, Lab Opt Appl, F-91761 Palaiseau, France

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

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

来源：

NATURE PHYSICS | 2008年 / 4卷 / 05期

关键词：

D O I：

10.1038/nphys914

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In 1964 Keldysh(1) helped lay the foundations of strong-field physics by introducing a theoretical framework that characterized atomic ionization as a process that evolves with the intensity and wavelength of the fundamental field. Within this context, experiments(2) have examined the intensity-dependent ionization but, except for a few cases, technological limitations have confined the majority to wavelengths below 1 mu m. The development of intense, ultrafast laser sources in the mid-infrared ( 1 mu m < lambda < 5 mu m) region enables exploration of the wavelength scaling of the Keldysh picture while enabling new opportunities in strong-field physics, control of electronic motion and attosecond science. Here we report a systematic experimental investigation of the wavelength scaling in this region by concurrently analysing the production of energetic electrons and photons emitted by argon atoms interacting with few-cycle, mid-infrared fields. The results support the implicit predictions contained in Keldysh's work, and pave the way to the realization of brighter and shorter attosecond pulsed light sources using longer-wavelength driving fields.

引用

页码：386 / 389

页数：4

共 23 条

[1] TUNNELING IONIZATION OF NOBLE-GASES IN A HIGH-INTENSITY LASER FIELD [J].