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We investigate arrays of optical antennas coupled with fluorescent emitters. We specifically explore two limiting regimes — one where the antennas are separated by a distance equal to or larger than the wavelength, allowing the formation of hybrid modes called lattice surface modes, and the other where the period of the array is subwavelength. We provide theoretical insight about the coupling of fluorescent...
The resonant absorption in an ultrathin metamaterial is studied theoretically. We present a simple physical model describing this phenomenon based on equivalent resonant circuits. We discuss the role of radiative and dissipative damping of resonant mode supported by the metamaterial in the formation of absorption spectra. We show that the results of rigorous calculations of Maxwell equations can be...
A planar microwave ultrathin broadband absorber is proposed. It is composed of metallic patterns arranged on a dielectric material which is backed by a copper plate. The patterns of different dimensions allow to judiciously design absorption peaks at specific frequencies of interest. These peaks are due to the mode resonances of the cavities formed by the metallic patches, the dielectric substrate...
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