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Group velocity matching in high-order harmonic generation driven by mid-infrared lasers Public Deposited

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https://scholar.colorado.edu/concern/articles/q811kk27c
Abstract
  • We analyze the role of group-velocity matching (GVM) in the macroscopic build up of the high-harmonic signal generated in gas targets at high pressures. A definition of the walk-off length, associated with GVM, in the non-perturbative intensity regime of high-harmonic generation is given. Semiclassical predictions based on this definition are in excellent agreement with full quantum simulations. We demonstrate that group velocity matching is a relevant factor in high harmonic generation and the isolation of attosecond pulses driven by long wavelength lasers and preferentially selects contributions from the short quantum trajectories.
Creator
Date Issued
  • 2016-07-14
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Journal Volume
  • 18
Subject
Last Modified
  • 2019-12-05
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DOI
ISSN
  • 1367-2630
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