Excitation of unbalanced-Bessel beams by a gradual increase of nonlinearity in a water sample outlines the achievement of the first ever observed quasimonochromatic wave packet that propagates stably for hundreds of Rayleigh lengths in a focusing and dispersive Kerr medium, i.e., in the absence of spectral broadening and conical emission. A modulational instability analysis reveals the key role of nonlinear dissipation in quenching the growth of spatiotemporal unstable modes.
Observation of ConicalWaves in Focusing, Dispersive, and Dissipative Kerr Media
FACCIO, DANIELE FRANCO ANGEL;PAROLA, ALBERTO;DI TRAPANI, PAOLO
2007-01-01
Abstract
Excitation of unbalanced-Bessel beams by a gradual increase of nonlinearity in a water sample outlines the achievement of the first ever observed quasimonochromatic wave packet that propagates stably for hundreds of Rayleigh lengths in a focusing and dispersive Kerr medium, i.e., in the absence of spectral broadening and conical emission. A modulational instability analysis reveals the key role of nonlinear dissipation in quenching the growth of spatiotemporal unstable modes.
File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
PhysRevLett.99.223902.pdf
accesso aperto
Descrizione: PDF editoriale
Tipologia:
Altro materiale allegato
Licenza:
Creative commons
Dimensione
405.73 kB
Formato
Adobe PDF
|
405.73 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
