Zeptosecond High Harmonic keV X-Ray Waveforms Driven by Midinfrared Laser Pulses

被引：128

作者：

Hernandez-Garcia, C. ^{[1
,3
,4
]}

Perez-Hernandez, J. A. ^{[2
]}

Popmintchev, T. ^{[3
,4
]}

Murnane, M. M. ^{[3
,4
]}

Kapteyn, H. C. ^{[3
,4
]}

Jaron-Becker, A. ^{[3
,4
]}

Becker, A. ^{[3
,4
]}

Plaja, L. ^{[1
]}

机构：

[1] Univ Salamanca, Grp Invest Opt Extrema, E-37008 Salamanca, Spain

[2] Ctr Laseres Pulsados CLPU, Salamanca 37185, Spain

[3] Univ Colorado, JILA, Boulder, CO 80309 USA

[4] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 03期

基金：

美国国家科学基金会;

关键词：

ATTOSECOND PULSES; GENERATION; FIELD; FEMTOSECOND; DYNAMICS; SOFT; IONIZATION;

D O I：

10.1103/PhysRevLett.111.033002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate theoretically that the temporal structure of high harmonic x-ray pulses generated with midinfrared lasers differs substantially from those generated with near-infrared pulses, especially at high photon energies. In particular, we show that, although the total width of the x-ray bursts spans femtosecond time scales, the pulse exhibits a zeptosecond structure due to the interference of high harmonic emission from multiple reencounters of the electron wave packet with the ion. Properly filtered and without any compensation of the chirp, regular subattosecond keV waveforms can be produced.

引用

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