Attosecond emission from chromium plasma

被引：46

作者：

Bom, L. B. Elouga ^{[1
]}

Haessler, S. ^{[2
,3
]}

Gobert, O. ^{[2
]}

Perdrix, M. ^{[2
]}

Lepetit, F. ^{[2
]}

Hergott, J-F ^{[2
]}

Carre, B. ^{[2
]}

Ozaki, T. ^{[1
]}

Salieres, P. ^{[2
]}

机构：

[1] Inst Natl Rech Sci, Ctr Energie Mat & Telecommun, Varennes, PQ J3X 1S2, Canada

[2] CEA Saclay, IRAMIS Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France

[3] Vienna Univ Technol, Photon Inst, A-1040 Vienna, Austria

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 04期

基金：

奥地利科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

ORDER HARMONIC-GENERATION; IONIZATION; ATOMS;

D O I：

10.1364/OE.19.003677

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present the first measurement of the attosecond emission generated from underdense plasma produced on a solid target. We generate high-order harmonics of a femtosecond Ti:sapphire laser focused in a weakly ionized underdense chromium plasma. Using the "Reconstruction of Attosecond Beating by Interference of Two-photon Transitions" (RABITT) technique, we show that the 11(th) to the 19(th) harmonic orders form in the time domain an attosecond pulse train with each pulse having 300 as duration, which is only 1.05 times the theoretical Fourier transform limit. Measurements reveal a very low positive group delay dispersion of 4200 as(2). Beside its fundamental interest, high-order harmonic generation in plasma plumes could thus provide an intense source of attosecond pulses for applications. (C) 2011 Optical Society of America

引用

页码：3677 / 3685

页数：9

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