High-order harmonic generation from diatomic molecules with large internuclear distance: The effect of two-center interference

Details High-order harmonic generation from diatomic molecules with large internuclear distance: The effect of two-center interference High-order harmonic generation from diatomic molecules with large internuclear distance: The effect of two-center interference

2007-07-17

arxiv.org/abs/0707.2546v2

Physics

Atomic Physics

5 pages,4 figures

Scientific paper

10.1103/PhysRevA.77.013410

In the present paper, we investigate the high-order harmonic generation (HHG) from diatomic molecules with large internuclear distance using a strong field approximation (SFA) model. We find that the hump and dip structure emerges in the plateau region of the harmonic spectrum, and the location of this striking structure is sensitive to the laser intensity. Our model analysis reveals that two-center interference as well as the interference between different recombination electron trajectories are responsible for the unusual enhanced or suppressed harmonic yield at a certain order, and these interference effects are greatly influenced by the laser parameters such as intensity.

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