Compact 200 kHz HHG source driven by a few-cycle OPCPA

Research output: Contribution to journalArticle


We present efficient high-order harmonic generation (HHG) based on a high-repetition rate, few-cycle, near infrared (NIR), carrier-envelope phase stable, optical parametric chirped pulse amplifier (OPCPA), emitting 6 fs pulses with 9 μJ pulse energy. In krypton, we reach conversion efficiencies from the NIR to the extreme ultraviolet (XUV) radiation pulse energy on the order of ∼10-6 with less than 3 μJ driving pulse energy. This is achieved by optimizing the OPCPA for a spatially and temporally clean pulse and by a specially designed high-pressure gas target. In the future, the high efficiency of the HHG source will be beneficial for high-repetition rate two-colour (NIR-XUV) pump-probe experiments, where the available pulse energy from the laser has to be distributed economically between pump and probe pulses.


External organisations
  • Max Planck Institute for Nuclear Physics
  • University of Colorado
  • Leibniz University of Hannover
  • VENTEON Laser Technologies GmbH
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics


  • frequency conversion, harmonic generation, including higher-order harmonic generation, optical parametric oscillators and amplifiers, optical pulse generation and pulse compression, ultrafast processes
Original languageEnglish
Article number014007
JournalJournal of Optics (United Kingdom)
Issue number1
Publication statusPublished - 2018 Jan 1
Publication categoryResearch