Ramsey-type spectroscopy with high-order harmonics.

نویسندگان

  • Stefano Cavalieri
  • Roberto Eramo
  • Marzia Materazzi
  • Chiara Corsi
  • Marco Bellini
چکیده

We present an experiment where Ramsey-type spectroscopy is applied to autoionizing states of krypton by using the ninth harmonic (88 nm) of a femtosecond Ti:sapphire laser. The ionization process, detected by an electron-energy spectrometer, shows the characteristic quantum interference pattern. The behavior of the fringe contrast compares favorably with a simple essential-state model, whose parameters have been taken from the literature. The experiment shows the feasibility of high-resolution spectroscopy in the extreme ultraviolet by using high-order laser harmonics.

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عنوان ژورنال:
  • Physical review letters

دوره 89 13  شماره 

صفحات  -

تاریخ انتشار 2002