Observation of Conical Waves in Focusing, Dispersive, and Dissipative Kerr Media

P. Polesana, A. Couairon, D. Faccio, A. Parola, M. A. Porras, A. Dubietis, A. Piskarskas, P. Di Trapani
2007 Physical Review Letters  
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.
doi:10.1103/physrevlett.99.223902 pmid:18233286 fatcat:bm7allijybffhjh5tf7iqcc7rm