Molecular Recollision Interferometry in High Harmonic Generation
- 21 February 2008
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 100 (7), 073902
- https://doi.org/10.1103/PhysRevLett.100.073902
Abstract
We use extreme-ultraviolet interferometry to measure the phase of high-order harmonic generation from transiently aligned 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
This publication has 23 references indexed in Scilit:
- Molecular imaging using recolliding electronsJournal of Physics B: Atomic, Molecular and Optical Physics, 2007
- Probing Orbital Structure of Polyatomic Molecules by High-Order Harmonic GenerationPhysical Review Letters, 2007
- Monitoring molecular dynamics using coherent electrons from high harmonic generationProceedings of the National Academy of Sciences, 2006
- Probing Proton Dynamics in Molecules on an Attosecond Time ScaleScience, 2006
- Quantum interference during high-order harmonic generation from aligned moleculesNature, 2005
- Controlling High Harmonic Generation with Molecular Wave PacketsPhysical Review Letters, 2005
- Tomographic imaging of molecular orbitalsNature, 2004
- Colloquium: Aligning molecules with strong laser pulsesReviews of Modern Physics, 2003
- Time evolution of pendular states created by the interaction of molecular polarizability with a pulsed nonresonant laser fieldThe Journal of Chemical Physics, 1999
- Theory of high-harmonic generation by low-frequency laser fieldsPhysical Review A, 1994