A broadband noise was injected together with the strong (quasi) plane and monochromatic pump to provide experimental evidence of the genuine hyperbolic feature of the noise-seeded MI in bulk, optical systems. An optical WP shaped as a large, elongated beam and long pulse that propagates in a nonlinear crystal tuned for second harmonic generation close to phase matching technique was chosen to perform the experiment. It was found that the noise seeded MI develops in the spatiotemporal domain in the regime of the second harmonic generation. It was also found out that due to instability, a noise as weak as 0.01% of the pump leads to quenching of the spatial deterministic beam breakup and spatial-soliton formation.
Salerno, D., Jedrkiewicz, O., Trull, J., Valiulis, G., Picozzi, A., Di Trapani, P. (2004). Noise-seeded spatiotemporal modulation instability in normal dispersion. PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS, 70(6), 065603 [10.1103/PhysRevE.70.065603].
Noise-seeded spatiotemporal modulation instability in normal dispersion
SALERNO, DOMENICO;
2004
Abstract
A broadband noise was injected together with the strong (quasi) plane and monochromatic pump to provide experimental evidence of the genuine hyperbolic feature of the noise-seeded MI in bulk, optical systems. An optical WP shaped as a large, elongated beam and long pulse that propagates in a nonlinear crystal tuned for second harmonic generation close to phase matching technique was chosen to perform the experiment. It was found that the noise seeded MI develops in the spatiotemporal domain in the regime of the second harmonic generation. It was also found out that due to instability, a noise as weak as 0.01% of the pump leads to quenching of the spatial deterministic beam breakup and spatial-soliton formation.
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