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  1. No Access

    Article

    Full tunability of laser femtosecond high-order harmonics in the ultraviolet spectral range

    We demonstrate experimentally the full tunability of a coherent femtosecond source in the whole ultraviolet spectral region. The experiment relies on the technique of high-order harmonic generation driven by a...

    B. Mahieu, S. Coraggia, C. Callegari, M. Coreno, G. De Ninno… in Applied Physics B (2012)

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    Article

    Two-step excitation of Rb atoms on He nanodroplets

    We present the first sequential laser excitation of atom-doped helium nanodroplets. Rubidium atoms on the surface of helium nanodroplets are selectively excited with a continuous wave laser to the 52P1/2 state s...

    M. Theisen, F. Lackner, F. Ancilotto, C. Callegari… in The European Physical Journal D (2011)

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    Article

    Spectroscopy of alkali atoms (Li, Na, K) attached to large helium clusters

    Large liquid helium clusters (Hen, n ≈ 104) produced in a supersonic jet are doped with alkali atoms (Li, Na, K) and characterized by means of laser induced fluorescence. Each cluster contains, on average, less t...

    F. Stienkemeier, J. Higgins, C. Callegari… in Zeitschrift für Physik D Atoms, Molecules … (1996)