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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 18, Iss. 3 — Mar. 1, 2001
  • pp: 325–330

High-order harmonic generation in atomic clusters with a two-dimensional model

Javier R. Vázquez de Aldana and Luis Roso  »View Author Affiliations

JOSA B, Vol. 18, Issue 3, pp. 325-330 (2001)

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High-order harmonic generation in atom clusters interacting with an intense linearly polarized laser field is studied by means of numerical simulations of the time-dependent Schrödinger equation for a two-dimensional model cluster in the single-active electron approximation. The well-known first and second cutoffs (in the atomic and molecular cases) are not clear in cluster calculations. In fact, the structure of the spectrum consists of a long plateau that extends far beyond the I<sub>P</sub>+3.17 U<sub>P</sub> limit and a collection of high-order harmonics with decreasing but significant intensities up to extremely high frequencies.

© 2001 Optical Society of America

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(190.4160) Nonlinear optics : Multiharmonic generation
(270.6620) Quantum optics : Strong-field processes

Javier R. Vázquez de Aldana and Luis Roso, "High-order harmonic generation in atomic clusters with a two-dimensional model," J. Opt. Soc. Am. B 18, 325-330 (2001)

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