X waves, known in linear optics, acoustic and microwave physics for their unique non-dispersive and non-diffracting features, appear as the normal propagation mode of a wide class of nonlinear systems. Here we demonstrate how these apparently exotic objects represent the normal mode of propagation for a wide class of nonlinear systems, i. e. in the presence of normal dispersion and self-focusing phase modulation. The experiment is made in regime of second-harmonic generation (SHG), which allowed us to exploit a very strong temporal-broadening effect due to the group-velocity mismatch between the fundamental and the second harmonic.


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    Titel :

    Nonlinear X waves: a spontaneous localization in spatio-temporal domain


    Beteiligte:
    Di Trapani, P. (Autor:in) / Trull, J. (Autor:in) / Jedrkiewicz, O. (Autor:in) / Valiulis, G. (Autor:in) / Conti, C. (Autor:in) / Trillo, S. (Autor:in) / Piskarskas, A. (Autor:in)


    Erscheinungsdatum :

    01.01.2002


    Format / Umfang :

    184935 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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