Noise-seeded spatiotemporal modulation instability in normal dispersion.
In optical second-harmonic generation with normal dispersion, the virtually infinite bandwidth of the unbounded, hyperbolic, modulational instability leads to quenching of spatial multisoliton formation and to the occurrence of a catastrophic spatiotemporal breakup when an extended beam is left to interact with an extremely weak external noise with a coherence time much shorter than that of the pump.
Salerno
D
D
INFM e Dipartimento di Fisica e Matematica, Universitá dell'Insubria, Via Valleggio 11, 22100 Como, Italy.
Jedrkiewicz
O
O
Trull
J
J
Valiulis
G
G
Picozzi
A
A
Di Trapani
P
P