Radiative coupling between oscillators is one of the most fundamental subjects of research
in optics, where particularly a Bragg-type arrangement is of interest and has already been
applied to atoms and excitons in quantum wells. Here we explore this arrangement in a
plasmonic structure. We observe the emergence of an octave-wide photonic band gap in the
optical regime. Compared with atomic or excitonic systems, the coupling efficiency of the
particle plasmons utilized here is several orders of magnitude larger and widely tunable by …

… Optica Publishing Group developed the Optics and Photonics Topics to help organize its
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and is organized in a three-level hierarchy. Read more. … We demonstrate that a three-dimensional
arrangement of particle plasmonic oscillators at Bragg distance leads to a superradiant
plasmon mode. We observe the formation of a very broad photonic band gap that spans
almost one octave. …