Localized wave packet (LWP) exist with normal group-velocity dispersion (GVD) in the form of nonlinear X waves (NLXWs) or X-wave solitons. To date X-shaped waves are known only in the context of linear acoutic or electromagnetic propagation, and constitute the polichromatic generalization of diffraction-free Besel beams. They are observed in both acoustical and optical experiment, both requiring input beam-shaping technique. It is found that propagation-invariant NLXWs that can be naturally regarded as the continuation of linear X waves into the nonlinear regime.
Nonlinear electromagnetic X waves
TRILLO, Stefano;
2003
Abstract
Localized wave packet (LWP) exist with normal group-velocity dispersion (GVD) in the form of nonlinear X waves (NLXWs) or X-wave solitons. To date X-shaped waves are known only in the context of linear acoutic or electromagnetic propagation, and constitute the polichromatic generalization of diffraction-free Besel beams. They are observed in both acoustical and optical experiment, both requiring input beam-shaping technique. It is found that propagation-invariant NLXWs that can be naturally regarded as the continuation of linear X waves into the nonlinear regime.File in questo prodotto:
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