Molecular Orbital Tomography using Short Laser Pulses
arXiv:0712.3710 · doi:10.1103/PhysRevA.78.033410
Abstract
Recently, a method to image molecular electronic wave functions using high harmonic generation (HHG) was introduced by Itatani \textit{et al.\} [Nature {\textbf{432}}, 876 (2004)]. We show that, while the tomographic reconstruction of general orbitals with arbitrary symmetry cannot be performed with long laser pulses, this becomes possible when extremely short pulses are used. An alternative reconstruction equation based on momentum matrix elements, rather than on dipole matrix elements, is proposed. We present simulations of the procedure for 2D model systems based on numerical solutions of the time-dependent Schrödinger equation, and present results from further post-processing of the reconstructed orbitals.
5 pages, 2 figures
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- Tomographic imaging of asymmetric molecular orbitals with a two-color multicycle laser field
- Tomography of asymmetric molecular orbitals with one-color inhomogeneous field
- High-order harmonic generation from field-distorted orbitals
- Tomographic reconstruction of molecular orbitals with twofold mirror antisymmetry: overcoming the nodal plane problem
- Influence of large permanent dipoles on molecular orbital tomography
- Laser-induced bound-state phases in high-order harmonic generation
- Imprints of the molecular-orbital geometry on the high-harmonic ellipticity
- Shifting nodal-plane suppressions in high-order harmonic spectra from diatomic molecules in orthogonally polarized driving fields