Modifications of high harmonic spectra by ion resonant transitions

Emilio Fiordilino, Birulin, Fiordilino, Platonenko, Ferrante, Gaetano Ferrante

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


High-order harmonic generation is considered in a system consisting of an ion with an internal degree of freedom plus an outer electron. The theoretical treatment is both quantum-mechanical and classical. The emphasis is on the core resonance effects, which can significantly modify the harmonic spectra, with appearance of anomalous peaks. Under some assumptions, the spectral amplitude of the resonant harmonic of the system dipole moment can be obtained by evaluation of such amplitude within a single-electron approximation and multiplication of the result by a correcting factor. The latter depends on the polarizability of the ion and of a free electron at the harmonic frequency. Copyright © 1996 by MAHK Hayka/Interperiodica Publishing.
Original languageEnglish
Pages (from-to)1152-1157
Number of pages6
JournalLaser Physics
Publication statusPublished - 1996

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Condensed Matter Physics
  • Industrial and Manufacturing Engineering


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