Lattice-controlled modulation instability in photorefractive feedback systems

Andrey A. Sukhorukov (1) , Nicolas Marsal (2) , Alexander Minovich (1) , Delphine Wolfersberger (2) , Marc Sciamanna (2) , Germano Montemezzani (2) , Dragomir N. Neshev (1)

1 Nonlinear Physics Centre
2 LMOPS - Laboratoire Matériaux Optiques, Photonique et Systèmes

We study the modulation instability in a two-dimensional nonlinear single feedback system with a photonic lattice and reveal a sharp transition in the instability regimes as the lattice strength is increased. For a shallow lattice, the instability modes are enhanced parallel to the lattice wave vector, while in stronger lattices, these modes are suppressed.

Domaines: Optique [physics.optics]

Andrey A. Sukhorukov, Nicolas Marsal, Alexander Minovich, Delphine Wolfersberger, Marc Sciamanna, et al.. Lattice-controlled modulation instability in photorefractive feedback systems. Optics Letters, 2010, 35 (21), pp.3568-3570. ⟨10.1364/OL.35.003568⟩. ⟨hal-00533718⟩