Phase properties of laser high-order harmonics generated on plasma mirrors

被引:74
|
作者
Quere, F. [1 ]
Thaury, C. [1 ]
Geindre, J-P. [2 ]
Bonnaud, G. [1 ]
Monot, P. [1 ]
Martin, Ph. [1 ]
机构
[1] CEN Salacy, DSM IRAMIS, Commissariat Energie Atom, Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France
[2] Univ Paris 06, Ecole Polytech, CEA, CNRS,UMR 7605,Lab Utilisat Lasers Intenses, F-91128 Palaiseau, France
关键词
D O I
10.1103/PhysRevLett.100.095004
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
As a high-intensity laser-pulse reflects on a plasma mirror, high-order harmonics of the incident frequency can be generated in the reflected beam. We present a numerical study of the phase properties of these individual harmonics, and demonstrate experimentally that they can be coherently controlled through the phase of the driving laser field. The harmonic intrinsic phase, resulting from the generation process, is directly related to the coherent sub-laser-cycle dynamics of plasma electrons, and thus constitutes a new experimental probe of these dynamics.
引用
收藏
页数:4
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