Experimental studies of attosecond pulse trains

Research output: Contribution to journalArticle


We present experimental measurements of attosecond pulse trains. The characterization of the pulses uses a spectral interferometry technique that is implemented with a Mach-Zehnder interferometer. This allows us to manipulate independently the pump and probe pulses for a wide range of applications. By letting the attosecond pulses pass through metallic films, we can in particular compensate for the intrinsic chirp of the attosecond pulses corresponding to the plateau spectral region, thus getting pulses as short as 170 attoseconds-only 1.2 optical cycles at the central frequency. The measurement technique is also applicable for determination of the group delay of thin XUV-transparent films and relative delay in the photoionization process. Our experimental method is applied to attosecond pulse trains created by 35- and 9-fs laser pulses, and the shortest train observed consists of three or four pulses.


  • Katalin Varju
  • Per Johnsson
  • Rodrigo Lopez
  • Thomas Remetter
  • E Gustafsson
  • J Mauritsson
  • MB Gaarde
  • KJ Schafer
  • C Erny
  • I Sola
  • A Zair
  • E Constant
  • E Cormier
  • E Mevel
  • Anne L'Huillier
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics
Original languageEnglish
Pages (from-to)888-898
JournalLaser Physics
Issue number6
Publication statusPublished - 2005
Publication categoryResearch