Fullerenes and molecules in strong laser pulses: Collective dynamics, field ionization and harmonic generation

Details Fullerenes and molecules in strong laser pulses: Collective dynamics, field ionization and harmonic generation Fullerenes and molecules in strong laser pulses: Collective dynamics, field ionization and harmonic generation

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..611..276b&link_type=abstract

SUPERSTRONG FIELDS IN PLASMAS: Second International Conference on Superstrong Fields in Plasmas, Second International Conference

Physics

Multiphoton Ionization And Excitation To Highly Excited States, Frequency Conversion, Harmonic Generation, Including Higher-Order Harmonic Generation, Spectroscopy And Geometrical Structure Of Clusters, Laser-Plasma Interactions, Strong-Field Excitation Of Optical Transitions In Quantum Systems, Multiphoton Processes, Dynamic Stark Shift

Scientific paper

Computational studies of many-electron systems in strong laser fields are presented. The ionization and nonlinear dipole response of the ball-shaped C60 fullerene molecule are investigated with a time-dependent density functional approach and a jellium approximation for the ionic background. We find that C60 ionization at 800 nm wavelength occurs multiphoton-like rather than via excitation of a ``giant'' resonance. Harmonic generation from the interaction of a circularly polarized laser field and a molecule with a discrete rotational symmetry is also studied, and spectra and selection rules are interpreted via a general group theory approach. .

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