Dipole spectrum structure of nonresonant nonpertubative driven two-level atoms

A. Picón, L. Roso, J. Mompart, O. Varela, V. Ahufinger, R. Corbalán, L. Plaja

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)


We analyze the dipole spectrum of a two-level atom excited by a nonresonant intense monochromatic field under the electric dipole approximation and beyond the rotating wave approximation. We show that the apparently complex spectral structure can be completely described by two families: harmonic frequencies of the driving field and field-induced nonlinear fluorescence. Our formulation of the problem provides quantitative laws for the most relevant spectral features: harmonic ratios and phases, nonperturbative Stark shift, and frequency limits of the harmonic plateau. In particular, we demonstrate the locking of the harmonic phases at the wings of the plateau opening the possibility of ultrashort pulse generation through harmonic filtering. © 2010 The American Physical Society.
Original languageEnglish
Article number033420
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Publication statusPublished - 23 Mar 2010


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