Micro-focusing of broadband high-order harmonic radiation by a double toroidal mirror

Hélène Coudert-Alteirac, Hugo Dacasa, Filippo Campi, Emma Kueny, Balázs Farkas, Fabian Brunner, Sylvain Maclot, Bastian Manschwetus, Hampus Wikmark, Jan Lahl, Linnea Rading, Jasper Peschel, Balázs Major, K. Varjú, Guillaume Dovillaire, Philippe Zeitoun, Per Johnsson, Anne L'Huillier, Piotr Rudawski

Research output: Contribution to journalArticle

8 Citations (Scopus)


We present an optical system based on two toroidal mirrors in aWolter configuration to focus broadband extreme ultraviolet (XUV) radiation. Optimization of the focusing optics alignment is carried out with the aid of an XUV wavefront sensor. Back-propagation of the optimized wavefront to the focus yields a focal spot of 3.6 × 4.0 μm2 full width at half maximum, which is consistent with ray-tracing simulations that predict a minimum size of 3.0 × 3.2 μm2. This work is important for optimizing the intensity of focused high-order harmonics in order to reach the nonlinear interaction regime.

Original languageEnglish
Article number1159
JournalApplied Sciences (Switzerland)
Issue number11
Publication statusPublished - Nov 12 2017


  • Attosecond pulses
  • Extreme ultraviolet
  • High-order harmonic generation
  • Ultrafast nonlinear optics
  • Wavefront sensing
  • XUV focusing

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

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    Coudert-Alteirac, H., Dacasa, H., Campi, F., Kueny, E., Farkas, B., Brunner, F., Maclot, S., Manschwetus, B., Wikmark, H., Lahl, J., Rading, L., Peschel, J., Major, B., Varjú, K., Dovillaire, G., Zeitoun, P., Johnsson, P., L'Huillier, A., & Rudawski, P. (2017). Micro-focusing of broadband high-order harmonic radiation by a double toroidal mirror. Applied Sciences (Switzerland), 7(11), [1159]. https://doi.org/10.3390/app7111159