title: Low-diffraction beaming in plasmonic crystals.
abstract: We analyze the propagation of electromagnetic modes guided by periodic plasmonic structures. We use full-wave solutions of Maxwell equations to calculate dispersion of these modes and derive analytical description of their optical properties. Finally, we demonstrate that, at a certain frequency range that can be controlled by the geometry, diffraction of these guided states is strongly suppressed, leading to formation of low-diffraction beams. A beaming phenomenon, consistent with earlier experiments, can be used as the foundation for on-chip communication or microscopy.
authors: Department of Physics and Applied Physics, University of Massachusetts at Lowell, One University Avenue, Lowell, Massachusetts 01854, USA.
authors: Sandeep
authors: S
authors: Inampudi
authors: Igor I
authors: II
authors: Smolyaninov
authors: Viktor A
authors: VA
authors: Podolskiy