Phase-resolved attosecond near-threshold photoionization of molecular nitrogen

被引：153

作者：

Haessler, S. ^{[1
]}

Fabre, B. ^{[2
]}

Higuet, J. ^{[2
]}

Caillat, J. ^{[3
]}

Ruchon, T. ^{[1
]}

Breger, P. ^{[1
]}

Carre, B. ^{[1
]}

Constant, E. ^{[2
]}

Maquet, A. ^{[3
]}

Mevel, E. ^{[2
]}

Salieres, P. ^{[1
]}

Taieb, R. ^{[3
]}

Mairesse, Y. ^{[2
]}

机构：

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

[2] Univ Bordeaux 1, CELIA, UMR 5107, CNRS,CEA, F-33405 Talence, France

[3] Univ Paris 06, CNRS, UMR 7614, LCPMR, F-75231 Paris 5, France

来源：

PHYSICAL REVIEW A | 2009年 / 80卷 / 01期

关键词：

AUTOIONIZATION;

D O I：

10.1103/PhysRevA.80.011404

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We photoionize nitrogen molecules with a train of extreme ultraviolet attosecond pulses together with a weak infrared field. We measure the phase of the two-color two-photon ionization transition (molecular phase) for different states of the ion. We observe a 0.9 pi shift for the electrons produced in the ionization channels leading to the X (2)Sigma(+)(g), v' = 1, and v' = 2 states. We relate this phase shift to the presence of a complex resonance in the continuum. By providing both a high spectral and temporal resolution, this general approach gives access to the evolution of extremely short-lived states, which is often not accessible otherwise.

引用

页数：4

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