Excitation of surface plasmon-polaritons in metal films with double periodic modulation:anomalous optical effects

Kats, A. V., Nesterov, M. L. and Nikitin, A. Yu (2007). Excitation of surface plasmon-polaritons in metal films with double periodic modulation:anomalous optical effects. Physical Review B, 76 (4), 045413-1 - 045413-23.

Abstract

We perform a thorough theoretical analysis of resonance effects when an arbitrarily polarized plane monochromatic wave is incident onto a double periodically modulated metal film sandwiched between two transparent media. The proposed theory offers a generalization of the approach that had been developed in our recent papers for the simplest instance of one-dimensional structures to two-dimensional ones. A special emphasis is placed on the films with the modulation caused by cylindrical inclusions; hence, the results obtained are applicable to the films used in the experiments. We discuss a spectral composition of modulated films and highlight the principal role of "resonance" and "coupling" modulation harmonics. All the originating multiple resonances, associated with the surface plasmon-polariton leaky modes, are examined in detail. The transformation coefficients for different diffraction orders are investigated in the vicinity of each resonance. We make a comparison between our theory and recent experiments concerning enhanced light transmittance (ELT) and show the ways of increasing the efficiency of this phenomenon. In the appendixes, we demonstrate a close analogy between the ELT effect and peculiarities of a forced motion of two coupled classical oscillators.

Publication DOI: https://doi.org/10.1103/PhysRevB.76.045413
Divisions: Engineering & Applied Sciences
Additional Information: ©2007 American Physical Society
Uncontrolled Keywords: Condensed Matter Physics
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Related URLs: http://www.scopus.com/inward/record.url?scp=34447571655&partnerID=8YFLogxK (Scopus URL)
Published Date: 2007-07-17
Authors: Kats, A. V.
Nesterov, M. L.
Nikitin, A. Yu

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