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          Institute: MPI für Kernphysik     Collection: Theoretical Quantum Dynamics     Display Documents



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ID: 256683.0, MPI für Kernphysik / Theoretical Quantum Dynamics
High-order harmonic generation in vibrating molecules
Authors:Chirila, Ciprian C.; Lein, Manfred
Language:English
Date of Publication (YYYY-MM-DD):2006-01-20
Title of Journal:Journal of Modern Optics
Journal Abbrev.:J. Mod. Opt.
Volume:53
Issue / Number:1-2
Start Page:113
End Page:124
Review Status:not specified
Audience:Experts Only
Abstract / Description:The generation of high-order harmonics in small diatomic molecules is theoretically investigated with inclusion of the vibrational degree of freedom. The results obtained from the solution of the time-dependent Schrödinger equation for a model H2 molecule are interpreted by analysing the influence of the vibrational motion in the framework of the strong-field approximation. Ionization launches a vibrational wave packet whose motion is correlated with the motion of the continuum electron wave packet. The harmonics are sensitive to a correlation function quantifying the overlap between the vibrational wave packet at the time of recombination and a vibrational target wave packet, i.e. the wave packet for which de-excitation into the ground state is most likely. We show that more intense harmonics are generated in heavier isotopes due to the slower nuclear motion.
External Publication Status:published
Document Type:Article
Communicated by:C.H. Keitel
Affiliations:MPI für Kernphysik/ Group C.H. Keitel/Molecular Quantum Dynamics and Attosecond Physics (M. Lein)
Identifiers:DOI:10.1080/09500340500233636
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