title: Mesoscopic self-collimation and slow light in all-positive index layered photonic crystals.
abstract: We demonstrate a mesoscopic self-collimation effect in photonic crystal superlattices consisting of a periodic set of all-positive index 2D photonic crystal and homogeneous layers. We develop an electromagnetic theory showing that diffraction-free beams are observed when the curvature of the optical dispersion relation is properly compensated for. This approach allows us to combine slow-light regime together with self-collimation in photonic crystal superlattices presenting an extremely low filling ratio in air.
authors.affiliation: LASMEA UMR-CNRS 6602, Université Clermont-Ferrand II, Campus des Cézeaux, 24, Avenue des Landais, 63177 Aubière Cedex, France.
authors.forename: Julien
authors.initials: J
authors.lastname: Arlandis
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Centeno
authors.forename: Rémi
authors.initials: R
authors.lastname: Pollès
authors.forename: Antoine
authors.initials: A
authors.lastname: Moreau
authors.forename: Julien
authors.initials: J
authors.lastname: Campos
authors.forename: Olivier
authors.initials: O
authors.lastname: Gauthier-Lafaye
authors.forename: Antoine
authors.initials: A
authors.lastname: Monmayrant