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Filament dynamics in condensed media with normal group velocity dispersion (GVD) may be understood in terms of spontaneous formation and successive interaction of nonlinear X-waves. Shown is an animation of the far-field spectrum evolution shows how with increasing propagation distance the spectrum fills up the union of the phase matched regions. In particular, the combined phase matched regions exhibit the characteristic X-shape around the origin that is associated with X-waves. Of course, the extremities in each region are not “populated” because of the finite bandwidth of the spatio-temporal spectrum of the nonlinear response that is not reflected in the TWM picture. In fact, the transverse extent of the spectrum is controlled by the transverse “dimension” of the nonlinear response peaka

MiroV2800x600x95

Filament dynamics in condensed media with normal group velocity dispersion (GVD) may be understood in terms of spontaneous formation and successive interaction of nonlinear X-waves. Shown is an animation of the far-field spectrum evolution shows how with increasing propagation distance the spectrum fills up the union of the phase matched regions. In particular, the combined phase matched regions exhibit the characteristic X-shape around the origin that is associated with X-waves. Of course, the extremities in each region are not “populated” because of the finite bandwidth of the spatio-temporal spectrum of the nonlinear response that is not reflected in the TWM picture. In fact, the transverse extent of the spectrum is controlled by the transverse “dimension” of the nonlinear response peaka


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MiroV2WithCont
Movie specs:
1.6MB
MPEG2
800x6000
30.000 fps
625.0 kbyte/s