Dynamic orbitals in high-harmonic generation from CO molecules

TL;DR

This paper investigates how dynamic core polarization and orbital deformation influence high-harmonic generation in CO molecules, revealing orientation effects and implications for attosecond pulse shaping.

Contribution

It introduces the significance of dynamic orbital effects in high-harmonic generation, advancing understanding of multielectron dynamics in molecules under intense laser fields.

Findings

Orientation-dependent harmonic spectra show strong effects due to orbital dynamics.

Dynamic minimum observed in harmonic spectra due to polarization effects.

Attosecond pulse characteristics are significantly affected by multielectron dynamics.

Abstract

We identify that both the dynamic core polarization and dynamic orbital deformation are important in the orientation-dependent high-harmonic generation of CO molecules subjected to intense few cycle laser fields. These polarization dynamics allow for the observation of strong orientation effects and dynamic minimum in the harmonic spectra. The generated attosecond pulses can be greatly affected by these multielectron effects. This work sheds light on future development of dynamic orbital imaging on attosecond time scale.