Linked attosecond phase interferometry for molecular frame measurements

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DOIResolve DOI: http://doi.org/10.1038/nphys2540
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TypeArticle
Journal titleNature Physics
ISSN1745-2473
1745-2481
Volume9
Issue3
Pages174178; # of pages: 5
AbstractHigh-harmonic spectroscopy uses attosecond techniques to measure single-atom or molecule photorecombination cross-sections. Whereas the amplitude of the extreme-ultraviolet light is easily measurable, the phase is more challenging to access. However, the phase contains information necessary for tomographic imaging of the molecular orbital wavefunction with attosecond–ångström resolution. Present techniques cannot simultaneously measure the phase as a function of molecular angle and photon frequency, which is necessary for a full reconstruction of the wavefunction. We overcome this limitation with an all-optical method that does not require any ad hoc assumptions about the phase. We apply it to record the full phase map of aligned bromine molecules relative to reference xenon atoms. It allows us to resolve, both spectrally and angularly, the participation of multiple molecular orbitals, and infer a phase of ionization. This method opens a path to time-resolved molecular orbital tomography.
Publication date
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
Identifiernphys2540
NPARC number21270331
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Record identifierd4159260-1d24-4d9f-95fa-1c9c15e4a346
Record created2014-01-30
Record modified2016-05-09
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