Ionisation of hydrogen molecule in intense ultrashort laser pulses: parallel versus perpendicular orientation

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Vanne, Yulian V.
Saenz, Alejandro
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Abstract
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A theoretical comparison of the electronic excitation and ionisation behaviour of molecular hydrogen oriented either parallel or perpendicular to a linear polarised laser pulse is performed. The investigation is based on a non-perturbative treatment that solves the full time-dependent Schr\"odinger equation of both correlated electrons within the fixed-nuclei approximation and the dipole. Results are shown for two different laser pulse lengths and intensities as well as for a large variety of photon frequencies starting in the 1- and reaching into the 6-photon regime. In order to investigate the influence of the intrinsic diatomic two-center problem even further, two values of the internuclear separation and a newly developed atomic model are considered.
Comment: 18 pages, 7 figures
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Quantum Physics
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