Phys. Rev. A 61, 063801 (2000) [8 pages]Nonadiabatic three-dimensional model of high-order harmonic generation in the few-optical-cycle regimeReceived 30 December 1999; published 5 May 2000 A numerical model to calculate the high-order harmonics spectrum of a macroscopic gas target irradiated by a few-optical-cycle laser pulse is presented. The single-atom response, calculated within the nonadiabatic strong-field approximation, is the source term of a three-dimensional propagation code. The simulation results show remarkably good agreement with experiments performed in neon using laser pulses with durations of 30 and 7 fs. Both simulations and experiments show discrete and well-resolved harmonics even for the shortest driving pulses. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.61.063801
DOI:
10.1103/PhysRevA.61.063801
PACS:
42.65.Ky, 42.65.Re, 32.80.-t
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