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C$_{60}$ in intense femtosecond laser pulses: nonlinear dipole response and ionization

Bauer, D. and Ceccherini, F. and Macchi, A. and Cornolti, F. (2001) C$_{60}$ in intense femtosecond laser pulses: nonlinear dipole response and ionization. Physical review. A, Atomic, Molecular, and Optical Physics, 64 (6). 063203 . ISSN 1094-1622

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Abstract

SUMMARY We study the interaction of strong femtosecond laser pulses with the C$_{60}$ molecule employing time-dependent density functional theory with the ionic background treated in a jellium approximation. The laser intensities considered are below the threshold of strong fragmentation but too high for perturbative treatments such as linear response. The nonlinear response of the model to excitations by short pulses of frequencies up to 45eV is presented and analyzed with the help of Kohn-Sham orbital resolved dipole spectra. In femtosecond laser pulses of 800nm wavelength ionization is found to occur multiphoton-like rather than via excitation of a ``giant'' resonance.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/01 - Fisica sperimentale
Divisions: Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA
Depositing User: dott.ssa Sandra Faita
Date Deposited: 05 Aug 2013 12:40
Last Modified: 05 Aug 2013 12:42
URI: http://eprints.adm.unipi.it/id/eprint/1313

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