Optical parametric amplifier pulse cleaning driven by aperiodic frequency converter

Zaharit Refaeli, Gilad Marcus, Haim Suchowski, Yariv Shamir

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We demonstrate temporal shape improvement of a short laser pulse using chirped aperiodic nonlinear frequency converter within an optical parametric amplifier. The aperiodic converter generated walk-off free high spatial quality pulse with ∼40% efficiency second harmonic while preserving the pump bandwidth. A <300 fs idler pulse was generated, with ∼10 nm central wavelength tunability around 1053 nm by pump generation and phase matching control. A pronounced contrast pedestal suppression of up to 40 dB was observed within a few picoseconds range around the peak. Such pedestal suppression has good scalability potential to high energies.

Original languageAmerican English
Article number075503
JournalPhysica Scripta
Issue number7
StatePublished - 1 Jul 2022

Bibliographical note

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© 2022 IOP Publishing Ltd.


  • aperiodicly poled crystal
  • non-linear optics
  • parametric amplifiers
  • pulse contrast
  • second harmonic
  • ultrafast laser


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