@InProceedings{Supelec531,
author = {Nicolas Marsal and Delphine Wolfersberger and Marc Sciamanna and Germano Montemezzani and Dragomir Neshev},
title = {{Control of pattern formation in a single feedback system by photonic lattices}},
year = {2009},
booktitle = {{A Future In Light}},
address = {Metz (France)},
abstract = {We present the observation of the manipulation of modulational
instability in a nonlinear dissipative system by a
periodic photonic lattice. We use a setup based on a
photorefractive BaTiO3 crystal in a single feedback mirror
configuration leading to the formation of hexagonal patterns.
Additionally, we impose an optical lattice to induce one or
two-dimensional photonic band-gap structures with variable
parameters. We show that by varying the lattice periodicity,
thus adjusting the transverse spatial frequencies associated to
the bandgap, we can induce patterns of particular
symmetry or suppress the modulational instability when the
position of the lattice bandgap coincides with the instability
gain.}
}