Abstract: | |
Accurate molecular imaging via high-order harmonic generation relies on comparing harmonic emission from a laser-irradiated molecule and an adequate reference system. However, an ideal reference atom with the same ionization properties as the molecule is not always available. We show that for suitably designed, very short laser pulses, a one-to-one mapping from high-order harmonic frequencies to electron momenta in above-threshold ionization exists. Comparing molecular and atomic momentum distributions then provides the electron recollision amplitude in the molecule for enhanced molecular imaging. The method retrieves the molecular recombination transition moments highly accurately, even with suboptimal reference atoms. © 2012 American Physical Society.
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License of this version: | Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
Publication type: | Article |
Publishing status: | publishedVersion |
Publication date: | 2012 |
Keywords english: | Above-threshold ionization, Atomic momentum distribution, Electron recollisions, Harmonic emissions, High order harmonic generation, High order harmonics, Molecular imaging, Molecular recombination, One-to-one mappings, Reference systems, Short laser pulse, Transition moments, Atoms, Harmonic generation, Ionization, Molecules, Harmonic analysis |
DDC: | 530 | Physik |
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