6533b7dcfe1ef96bd1272a6f
RESEARCH PRODUCT
Velocity locking of incoherent nonlinear wave packets
S. LagrangeAntonio PicozziHans R. JauslinStéphane Pitoissubject
PhysicsSum-frequency generationOptical fiberWave packetGeneral Physics and AstronomyNonlinear optics16. Peace & justice01 natural scienceslaw.invention010309 opticsNonlinear systemClassical mechanicsCross-polarized wave generationlaw0103 physical sciencesStimulated emission010306 general physicsComputingMilieux_MISCELLANEOUSCoherence (physics)description
We show both theoretically and experimentally in an optical fiber system that a set of incoherent nonlinear waves irreversibly evolves to a specific equilibrium state, in which the individual wave packets propagate with identical group velocities. This intriguing process of velocity locking can be explained in detail by simple thermodynamic arguments based on the kinetic wave theory. Accordingly, the selection of the velocity-locked state is shown to result from the natural tendency of the isolated wave system to approach the state that maximizes the nonequilibrium entropy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-09-24 |