Optical properties of a noble metal with a string-of-pearls insulator inhomogeneity

Armand Wirgin

Physica A: Statistical Mechanics and its Applications, 1989, vol. 157, issue 1, 382-387

Abstract: The configuration obtained by extracting, from the half space occupied by a noble metal, the material contained in the layer between two (in the mean parallel) periodic surfaces (gratings) and replacing it by an insulating material, is termed a string-of-pearls medium (SOPM). It reduces to a parallel-plane layered bicomposite medium (PPLBCM) for vanishing grating amplitudes and to a perfect mirror (PM) in the absence of the insulating layer. The spectra of the reflectivity for p-polarized incident light relative to the PM and PPLBCM are featureless, whereas those for the SOPM contain a series of spikes indicative of resonant coupling to the hybrid surface plasmons which are identified herein to be those associated with the eigenmodes of the PPLBCM.

Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:157:y:1989:i:1:p:382-387

DOI: 10.1016/0378-4371(89)90331-2

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