title: Subwavelength fractional Talbot effect in layered heterostructures of composite metamaterials.
abstract: We demonstrate that under certain conditions, fractional Talbot revivals can occur in heterostructures of composite metamaterials, such as multilayer positive- and negative-index media, metallodielectric stacks, and one-dimensional dielectric photonic crystals. Without recourse to the paraxial approximation, we also obtain Talbot images for the feature sizes of transverse patterns smaller than the illumination wavelength. A general expression for the Talbot distance in such structures is derived, and the conditions favorable for observing Talbot effects in layered heterostructures are discussed.
authors.affiliation: Physics and Computational Sciences, Naval Air Warfare Center, China Lake, California 93555, USA.
authors.forename: Simin
authors.initials: S
authors.lastname: Feng
authors.forename: Klaus
authors.initials: K
authors.lastname: Halterman
authors.forename: Pamela L
authors.initials: PL
authors.lastname: Overfelt