attochemistry; charge migration; high harmonic generation
Abstract :
[en] The ultrafast motion of electrons and holes after light-matter interaction is fundamental to a broad range of chemical and biophysical processes. We advanced high-harmonic spectroscopy to resolve spatially and temporally the migration of an electron hole immediately after ionization of iodoacetylene while simultaneously demonstrating extensive control over the process. A multidimensional approach, based on the measurement and accurate theoretical description of both even and odd harmonic orders, enabled us to reconstruct both quantum amplitudes and phases of the electronic states with a resolution of ~100 attoseconds. We separately reconstructed quasi–field-free and laser-controlled charge migration as a function of the spatial orientation of the molecule and determined the shape of the hole created by ionization. Our technique opens the prospect of laser control over electronic primary processes.
Research Center/Unit :
Chimie Physique Theorique
Disciplines :
Chemistry
Author, co-author :
Kraus, P. M.
Mignolet, Benoît ; Université de Liège > Département de chimie (sciences) > Laboratoire de chimie physique théorique
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