Coherent control of broadband isolated attosecond pulses in a chirped two-color laser field

被引：40

作者：

Zou, Pu ^{[1
]}

Zeng, Zhinan ^{[1
]}

Zheng, Yinghui ^{[1
]}

Lu, Yingying ^{[1
]}

Liu, Peng ^{[1
]}

Li, Ruxin ^{[1
]}

Xu, Zhizhan ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 03期

关键词：

EXTREME-ULTRAVIOLET SUPERCONTINUUM; GENERATION; COMPRESSION; REGIME;

D O I：

10.1103/PhysRevA.81.033428

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A theoretical investigation is presented that uses a strong two-color laser field composed of a linearly chirped fundamental (900 nm) and its subharmonic (1800-nm) laser pulses to control coherently the broadband isolated attosecond pulses in high-order harmonic generations. After the subharmonic field is added, the intrinsic chirp of harmonic emission can be reduced significantly, and consequently, the temporal synchronization of harmonic emission with different photon energies at the level of the single-atom response can be realized. In addition, the scheme is robust against the carrier envelope phase variation to produce a twin pulse of stable sub-100-as duration, and the relative intensity of the twin pulses can be changed just by adjusting the relative time delay of the two driving pulses, which is of benefit in general pump-probe experiments.

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页数：6

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