Separation of Target Structure and Medium Propagation Effects in High-Harmonic Generation
We calculate high-harmonic generation (HHG) by intense infrared lasers in atoms and molecules with the inclusion of macroscopic propagation of the harmonics in the gas medium. We show that the observed experimental spectra can be accurately reproduced theoretically despite the sensitivities of the HHG spectra to the experimental conditions. We further demonstrate that the simulated (or experimental) HHG spectra can be factored out as a product of a 'macroscopic wave packet' and the photo-recombination transition dipole moment where the former depends on the laser properties and the experimental conditions, while the latter is the property of the target only. The factorization makes it possible to extract target structure from experimental HHG spectra, and for ultrafast dynamic imaging of transient molecules.
C. Jin et al., "Separation of Target Structure and Medium Propagation Effects in High-Harmonic Generation," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 44, no. 9, IOP Publishing Ltd., May 2011.
The definitive version is available at https://doi.org/10.1088/0953-4075/44/9/095601
Keywords and Phrases
Experimental Conditions; Experimental Spectra; Gas Medium; High Harmonic Generation; Laser Property; Propagation Effect; Target Structure; Transient Molecules; Transition Dipole Moments; Ultra-Fast Dynamics, Harmonic Analysis; Harmonic Generation; Isomers, Infrared Lasers
International Standard Serial Number (ISSN)
Article - Journal
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