title: Beam dynamics in PT symmetric optical lattices.
abstract: The possibility of parity-time (PT) symmetric periodic potentials is investigated within the context of optics. Beam dynamics in this new type of optical structures is examined in detail for both one- and two-dimensional lattice geometries. It is shown that PT periodic structures can exhibit unique characteristics stemming from the nonorthogonality of the associated Floquet-Bloch modes. Some of these features include double refraction, power oscillations, and eigenfunction unfolding as well as nonreciprocal diffraction patterns.
authors: College of Optics & Photonics-CREOL, University of Central Florida, Orlando, Florida 32816, USA.
authors: K G
authors: KG
authors: Makris
authors: R
authors: R
authors: El-Ganainy
authors: D N
authors: DN
authors: Christodoulides
authors: Z H
authors: ZH
authors: Musslimani