@InProceedings{Supelec790,
author = {Nicolas Marsal and Vianney CAULLET and Delphine Wolfersberger and Marc Sciamanna},
title = {{Vortex induced complex dynamics of optical patterns}},
year = {2012},
booktitle = {{EOS annual meeting}},
month = {sep},
address = {Aberdeen (Scotland, UK)},
abstract = {We prove numerically and experimentally that optical pattern
formation can arise by using counterpropagating vortices. Such a
beam carrying an orbital angular momentum is injected into a
photorefractive single feedback system. We show that the
nonlinear wave-mixing occurring inside the medium gives rise to
different complex patterns with peculiar phase singularities and
rotating dynamics. We demonstrate that the dynamics is induced by
the vortex angular momentum and the rotation velocity depends on
the vortex topological charge.}
}