Attosecond control of electron-ion recollision in high harmonic generation

被引：35

作者：

Gademann, G. ^{[1
]}

Kelkensberg, F. ^{[1
]}

Siu, W. K. ^{[1
]}

Johnsson, P. ^{[2
]}

Gaarde, M. B. ^{[3
,4
]}

Schafer, K. J. ^{[3
,4
]}

Vrakking, M. J. J. ^{[1
,5
]}

机构：

[1] FOM, Inst Atom & Mol Phys AMOLF, NL-1098 XG Amsterdam, Netherlands

[2] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

[3] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[4] PULSE Inst, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[5] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12489 Berlin, Germany

来源：

NEW JOURNAL OF PHYSICS | 2011年 / 13卷

基金：

瑞典研究理事会; 美国国家科学基金会;

关键词：

SOFT X-RAYS; IONIZATION; MOLECULES; DYNAMICS; PULSES;

D O I：

10.1088/1367-2630/13/3/033002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that high harmonic generation driven by an intense near-infrared (IR) laser can be temporally controlled when an attosecond pulse train (APT) is used to ionize the generation medium, thereby replacing tunnel ionization as the first step in the well-known three-step model. New harmonics are formed when the ionization occurs at a well-defined time within the optical cycle of the IR field. The use of APT-created electron wave packets affords new avenues for the study and application of harmonic generation. In the present experiment, this makes it possible to study harmonic generation at IR intensities where tunnel ionization does not give a measurable signal.

引用

页数：8

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