Molecular recollision interferometry in high harmonic generation |
| |
Authors: | Zhou Xibin Lock Robynne Li Wen Wagner Nick Murnane Margaret M Kapteyn Henry C |
| |
Institution: | JILA and Department of Physics, University of Colorado and NIST, Boulder, Colorado 80309, USA. Xibin.Zhou@colorado.edu |
| |
Abstract: | 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|