Extraction of the species dependent dipole moment from high-order harmonic spectra in rare gas atoms

Abstract

Based on high-order harmonic generation (HHG) spectra obtained from solving the time-dependent Schrodinger equation for atoms, we established quantitatively that the HHG yield can be expressed as the product of a returning electron wave packet and the photo-recombination cross sections, and the shape of the returning wave packet is shown to be largely independent of the species. By comparing the HHG spectra generated from different targets under identical laser pulses, accurate structural information, including the phase of the recombination amplitude, can be retrieved. This result opens up the possibility of studying the target structure of complex systems, including their time evolution, from the HHG spectra generated by short laser pulses.

arXiv comment5 pages, 5 figures

References in corpus (3)

• Accurate retrieval of structural information from laser-induced photoelectron and high-harmonic spectra by few-cycle laser pulses
• Theoretical analysis of dynamic chemical imaging with lasers using high-order harmonic generation
• Theory of high-order harmonic generation from molecules by intense laser pulses

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• Probing molecular frame photoionization via laser generated high-order harmonics from aligned molecules
• Uncovering multiple orbitals influence in high harmonic generation from aligned N${}_2$
• Probing electronic wavefunctions by all-optical attosecond interferometry
• Polarization and ellipticity of high-order harmonics from aligned molecules generated by linearly polarized intense laser pulses
• Generation of isolated attosecond pulses in the far field by spatial filtering with an intense few-cycle mid-infrared laser
• Influence of Phase Matching on the Cooper Minimum in Ar High Harmonic Spectra
• Dynamical distortions of structural signatures in molecular High Harmonic Spectroscopy
• Universality in odd-even harmonic generation and application in terahertz waveform sampling