Optical wave turbulence and condensation of light

Abstract

In an optical experiment, we report a wave turbulence regime that, starting with weakly nonlinear waves with randomized phases, shows an inverse cascade of photons towards the lowest wavenumbers. We show that the cascade is induced by a six-wave resonant interaction process and is characterized by increasing nonlinearity. At low wavenumbers the nonlinearity becomes strong and leads to modulational instability developing into solitons, whose number is decreasing further along the beam.

6 pages, 7 figures, Changes made due to reviewers comments before publication

References in corpus (2)

• Dispersive shock waves with nonlocal nonlinearity
• Complex dynamics and configurational entropy of spatial optical solitons in nonlocal media

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