High-order harmonic generation from diatomic molecules in elliptically polarized driving fields: a generalized interference condition

Abstract

We investigate the influence of intense, elliptically polarized driving fields on high-order harmonic spectra from aligned diatomic molecules. We derive a generalized two-center interference condition for elliptically polarized fields, which accounts for s-p mixing and the orbital symmetry, within the strong-field and the single-active electron approximation. We show that the non-vanishing ellipticity introduces an effective dynamic shift in the angle for which the two-center interference maxima and minima occur, with regard to the existing condition for linearly polarized fields. This shift depends on the ratio between the field-dressed momentum components of the returning electron parallel and perpendicular to the major ellipticity axis along each possible orbit. Because of this dependence, we find that there will be a blurring in the two-center interference minima, and that increasing ellipticity leads to splitting in such patterns. These features are investigated in detail for H2 and Ar2.

arXiv comment13 pages, 11 figures; some figures have been simplified in order to comply with the arXiV requirements

References in corpus (7)

• Dispersive Photon Blockade in a Superconducting Circuit
• High-order above-threshold ionization: the uniform approximation and the effect of the binding potential
• Strong-field approximation for harmonic generation in diatomic molecules
• High-harmonic generation from arbitrarily oriented diatomic molecules including nuclear motion and field-free alignment
• Inducing elliptically polarized high-order harmonics from aligned molecules with linearly polarized femtosecond pulses
• Theoretical studies of high-harmonic generation: Effects of symmetry, degeneracy and orientation
• Multielectron corrections in molecular high-order harmonic generation for different formulations of the strong-field approximation

Cited by in corpus (8)

• Double-slit photoelectron interference in strong-field ionization of the neon dimer
• Applied Bohmian Mechanics
• Bohmian trajectory analysis of high-order harmonic generation: ensemble averages, non-locality and quantitative aspects
• Conservation laws for Electron Vortices in Strong-Field Ionisation
• Exploring symmetries in photoelectron holography with two-color linearly polarized fields
• Extracting an electron's angle of return from shifted interference patterns in macroscopic high-harmonic spectra of diatomic molecules
• Local most-probable routes and classic-quantum correspondence in strong-field two-dimensional tunneling ionization
• Shifting nodal-plane suppressions in high-order harmonic spectra from diatomic molecules in orthogonally polarized driving fields