Volume 2021 Issue 3
Dec.  2021
Turn off MathJax
Article Contents
Maria Hoflund, Jasper Peschel, Marius Plach, Hugo Dacasa, Kévin Veyrinas, Eric Constant, Peter Smorenburg, Hampus Wikmark, Sylvain Maclot, Chen Guo, Cord Arnold, Anne L'Huillier, Per Eng-Johnsson. 2021: Focusing Properties of High-Order Harmonics. Ultrafast Science, 2021(3). doi: 10.34133/2021/9797453
Citation: Maria Hoflund, Jasper Peschel, Marius Plach, Hugo Dacasa, Kévin Veyrinas, Eric Constant, Peter Smorenburg, Hampus Wikmark, Sylvain Maclot, Chen Guo, Cord Arnold, Anne L'Huillier, Per Eng-Johnsson. 2021: Focusing Properties of High-Order Harmonics. Ultrafast Science, 2021(3). doi: 10.34133/2021/9797453

Focusing Properties of High-Order Harmonics

doi: 10.34133/2021/9797453
Funds:

The authors acknowledge support from the Swedish Research Council, the European Research Council (advanced grant QPAP), the Knut and Alice Wallenberg Foundation, and the Crafoord Foundation. The research leading to these results has received funding from LASERLAB-EUROPE (grant agreement no. 654148, European Union’s Horizon 2020 research and innovation programme). S.M. acknowledges financial support from the COST Action CA18212-Molecular Dynamics in the GAS phase (MD-GAS), supported by COST (European Cooperation in Science and Technology).

  • Received Date: 2021-04-29
  • Rev Recd Date: 2021-07-27
  • Publish Date: 2021-12-01
  • Many applications of the extreme ultraviolet (XUV) radiation obtained by high-order harmonic generation (HHG) in gases require a small focus area in order to enable attosecond pulses to reach a high intensity. Here, high-order harmonics generated in Ar with a multiterawatt laser system in a loose focusing geometry are focused to a few micrometers using two toroidal mirrors in a Wolter configuration with a high demagnification factor. Using a knife-edge measurement technique, we determine the position and size of the XUV foci as a function of harmonic order. We show that the focus properties vary with harmonic order and the generation conditions. Simulations, based on a classical description of the harmonic dipole phase and assuming that the individual harmonics can be described as Gaussian beams, reproduce the experimental behavior. We discuss how the generation geometry affects the intensity and duration of the focused attosecond pulses.
  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (98) PDF downloads(0) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return