Spectral signature of short attosecond pulse trains.

  title={Spectral signature of short attosecond pulse trains.},
  author={Erik Mansten and J Marcus Dahlstr{\"o}m and Johan Mauritsson and T Ruchon and A L'Huillier and Janet Tate and Mette B. Gaarde and P. Eckle and Annalisa Guandalini and Mirko Holler and Florian Schapper and Lukas Gallmann and Ursula Keller},
  journal={Physical review letters},
  volume={102 8},
We report experimental measurements of high-order harmonic spectra generated in Ar using a carrier-envelope-offset (CEO) stabilized 12 fs, 800 nm laser field and a fraction (less than 10%) of its second harmonic. Additional spectral peaks are observed between the harmonic peaks, which are due to interferences between multiple pulses in the train. The position of these peaks varies with the CEO and their number is directly related to the number of pulses in the train. An analytical model, as… CONTINUE READING

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