Temporal model for quasi-phase matching in high-order harmonic generation

Y. Tao, S.J. Goh, Hubertus M.J. Bastiaens, Petrus J.M. van der Slot, S.G. Biedron, S.V. Milton, Klaus J. Boller

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)
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Abstract

We present a model for quasi-phase matching (QPM) in high-order harmonic generation (HHG). Using a one-dimensional description, we analyze the time-dependent, ultrafast wave-vector balance to calculate the on-axis harmonic output versus time, from which we obtain the output pulse energy. Considering, as an example, periodically patterned argon gas, as may be provided with a grid in a cluster jet, we calculate the harmonic output during different time intervals within the drive laser pulse duration. We find that identifying a suitable single spatial period is not straightforward due to the complex and ultrafast plasma dynamics that underlies HHG at increased intensities. The maximum on-axis harmonic pulse energy is obtained when choosing the QPM period to phase match HHG at the leading edge of the drive laser pulse.
Original languageEnglish
Pages (from-to)3621-3638
Number of pages17
JournalOptics express
Volume25
Issue number4
DOIs
Publication statusPublished - 10 Feb 2017

Keywords

  • IR-103470
  • METIS-321556

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