Observation of modulational instability in discrete media with self-defocusing nonlinearity
Milutin StepićInstitute of Physics and Physical Technology, Clausthal University of Technology, Clausthal-Zellerfeld, Germany. [email protected]Christian WirthClausthal University of TechnologyChristian E. RüterClausthal University of TechnologyDetlef KipClausthal University of Technology
2006en
ABI
Abstract
We report what we believe is the first observation of modulation instability in the anomalous-diffraction regions of a photonic lattice. The experiments were carried out in a 1D waveguide array fabricated in a lithium niobate crystal displaying the photovoltaic self-defocusing nonlinearity, and our results are confirmed numerically by simulating the nonlinear beam propagation.
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