Molecular recollision interferometry in high harmonic generation

被引：145

作者：

Zhou, Xibin ^{[1
,2
,3
]}

Lock, Robynne ^{[1
,2
,3
]}

Li, Wen ^{[1
,2
,3
]}

Wagner, Nick ^{[1
,2
,3
]}

Murnane, Margaret M. ^{[1
,2
,3
]}

Kapteyn, Henry C. ^{[1
,2
,3
]}

机构：

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.100.073902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use extreme-ultraviolet interferometry to measure the phase of high-order harmonic generation from transiently aligned CO(2) molecules. We unambiguously observe a reversal in phase of the high-order harmonic emission for higher harmonic orders with a sufficient degree of alignment. This results from molecular-scale quantum interferences between the molecular electronic wave function and the recolliding electron as it recombines with the molecule, and is consistent with a two-center model. Furthermore, using the combined harmonic intensity and phase information, we extract accurate information on the dispersion relation of the returning electron wave packet as a function of harmonic order. This analysis shows evidence of the effect of the molecular potential on the recolliding electron wave.

引用

页数：4

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