High-order harmonic generation from polyatomic molecules including nuclear motion and a nuclear modes analysis
Abstract
We present a generic approach for treating the effect of nuclear motion in the high-order harmonic generation from polyatomic molecules. Our procedure relies on a separation of nuclear and electron dynamics where we account for the electronic part using the Lewenstein model and nuclear motion enters as a nuclear correlation function. We express the nuclear correlation function in terms of Franck-Condon factors which allows us to decompose nuclear motion into modes and identify the modes that are dominant in the high-order harmonic generation process. We show results for the isotopes CH and CD and thereby provide direct theoretical support for a recent experiment [Baker {\it et al.}, Science {\bf 312}, 424 (2006)] that uses high-order harmonic generation to probe the ultra-fast structural nuclear rearrangement of ionized methane.
Cite
@article{arxiv.1001.4882,
title = {High-order harmonic generation from polyatomic molecules including nuclear motion and a nuclear modes analysis},
author = {C. B. Madsen and M. Abu-samha and L. B. Madsen},
journal= {arXiv preprint arXiv:1001.4882},
year = {2010}
}
Comments
6 pages, 6 figures