Abstract

A combination of Floquet theory and the complex coordinate method is used to establish a compact time independent expression for the generation of harmonics by a diatomic molecule. Only the nuclear motion is considered as a source for the spectra. In the assumption that a single Floquet state describes the system, only odd harmonics are obtained. An application to H2+ is presented. Correlation between the multiphoton nature of the absorption process and the appearance of higher harmonics is observed.

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