Lattice-controlled modulation instability in photorefractive feedback systems.
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.
Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia.
Andrey A
AA
Sukhorukov
Nicolas
N
Marsal
Alexander
A
Minovich
Delphine
D
Wolfersberger
Marc
M
Sciamanna
Germano
G
Montemezzani
Dragomir N
DN
Neshev