Interaction of attosecond and femtosecond pulses with atoms and molecules

Chacón, Salazar; Agustín, Alexis

doi:10.14201/gredos.127370

Cited by 1 publication

(2 citation statements)

References 111 publications

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“…In fact, the 2D orbital ψ 2D (x, z) obtained by the general MOT imaging procedure is the 3D orbital ψ(x, y, z) projected onto the plane perpendicular to the laser propagation direction [34]. It means that the 2D result is obtained by integrating the 3D orbital along the laser propagation direction.…”

Section: D Reconstruction Methodsmentioning

confidence: 99%

“…(1) the general orbital is divided into the gerade and ungerade components, and each component could be reconstructed respectively through decoding odd or even harmonics [29]; or (2) using an orthogonal two-color laser field to make electrons recollide with the parent ion in two noncollinear directions, and the transition dipole moment (TDM) is extracted in a single direction of recombination to reconstruct the orbital [30]. All these methods could obtain the two-dimensional (2D) orbital ψ 2D , which is the three-dimensional (3D) orbital ψ(x, y, z) projected onto the plane perpendicular to the laser propagation direction [34].…”

Section: Introductionmentioning

confidence: 99%

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Three-dimensional tomographic imaging of CO molecular orbitals reveals multi-electron effects

Ren¹,

Yang²,

Zhu³

et al. 2021

J. Phys. B: At. Mol. Opt. Phys.

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According to the asymmetric molecular orbital reconstruction algorithm, which divides orbital into gerade and ungerade components and which does not depend on the unidirectional recollisional condition, we obtain the two-dimensional highest occupied molecular orbital (HOMO) of CO based on the directly calculated transition dipole moment and the harmonic spectra calculated by the Lewenstein model, respectively, which is the three-dimensional (3D) HOMO projected onto the plane perpendicular to the laser propagation direction. In order to retrieve the full orbital function, a 3D molecular orbital tomography (MOT) method is developed and is successfully applied to the reconstructions of the HOMO of CO, which simplifies the 3D imaging process of orbitals of linear molecules, and is expected to be extended to reconstruct the 3D orbitals of nonlinear molecules. In addition, the time-dependent density functional theory is employed to acquire the harmonic spectra of CO in a 800 nm and 1500 nm wavelength laser, respectively. The comparison of these two reconstruction results helps identify the multi-electron effects for asymmetric MOT, which requires further study. This work advances the development of MOT and is expected to reveal multi-electron effects in orbital imaging of complex polyatomic molecules.

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Section: D Reconstruction Methodsmentioning

confidence: 99%