Multiple-stream instabilities and soliton turbulence in photonic plasma

Dmitry V. Dylov, Jason W. Fleischer

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26 Scopus citations

Abstract

We demonstrate weak and strong regimes of optical spatial turbulence by considering the nonlinear interaction of three partially coherent spatial beams. The geometry represents a multiple bump-on-tail instability, allowing an interpretation of nonlinear statistical light as a photonic plasma. For weak nonlinearity, we observe instability competition and sequential flattening of the bumps in momentum space, with no observable variations in position-space intensity. For strong nonlinearity, intensity modulations appear and the triple-hump spectrum merges into a single-peaked profile with an algebraic k-2 inertial range. This spectrum, with its associated modulations, is a definitive observation of soliton, or Langmuir, turbulence.

Original languageEnglish (US)
Article number061804
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume78
Issue number6
DOIs
StatePublished - Dec 24 2008

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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