par Picozzi, Antonio ;Haelterman, Marc
Référence Physical review. E, Statistical, nonlinear, and soft matter physics, 63, page (1-11)
Publication Publié, 2001
Article révisé par les pairs
Résumé : The influence of walk-off, dispersion, and diffraction on the coherence of parametric fluorescence was analyzed. The basic problem of parametric fluorescence from a continuous plane-wave pump was considered and the walk-off between the signal and idler waves was shown as the key ingradient responsible for the onset of coherence in parametric down conversion. The theory also revealed that the absence of walk-off, diffraction and chromatic dispersion in usual quadratic nonlinear materials lead to incoherent erratic dynamics.