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Measurement and laser control of attosecond charge migration in ionized iodoacetylene
Ist Teil von
Science (American Association for the Advancement of Science), 2015-11, Vol.350 (6262), p.790-795
Ort / Verlag
United States: American Association for the Advancement of Science
Erscheinungsjahr
2015
Link zum Volltext
Quelle
American Association for the Advancement of Science
Beschreibungen/Notizen
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.