Abstract
SynopsisWe study high-order harmonic generation (HHG) by solving a two-dimensional time-dependent Schrödinger equation (TDSE) for a hydrogen molecular ion H2+. A double plateau structure is detected in harmonic spectra, the wavelet time-frequency analysis and an extended semiclassical analysis show that the width of the first plateau can be used to estimate the internuclear distance of H2+.
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