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RESEARCH PRODUCT
Role of topological phase-defects in the parametric generation process
Simon-pierre GorzaMarc HaeltermanAntonio Picozzisubject
Generation processPhysicsAnnihilationbusiness.industryDegenerate energy levelsNonlinear opticsTopology01 natural sciencesAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsTime correlation010309 opticsOpticsParametric process0103 physical sciencesElectrical and Electronic EngineeringPhysical and Theoretical Chemistry010306 general physicsbusinessComputingMilieux_MISCELLANEOUSCoherence (physics)Parametric statisticsdescription
Abstract We show that topological phase-defects are spontaneously generated from noise fluctuations in the degenerate configuration of the parametric interaction. These localized coherent structures are shown to affect the coherence properties of the parametrically generated field. It is shown that the emergence of coherence in the fundamental field relies on a previously unrecognized process of mutual annihilation of pairs of neighboring phase-defects. More precisely, the density of phase-defects N , and the time correlation τ c of the generated field, are shown to exhibit a power-law behavior with the propagation length, i.e., τ c ∝ z 1 / 4 , N ∝ z - 1 / 4 .
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-01-20 | Optics Communications |