TRAPPED-MODE RESONANCES IN LIGHT DIFFRACTION BY A PLANAR DOUBLY PERIODIC STRUCTURE WITH ASYMMETRIC METAL ELEMENTS

V. V. Khardikov; E. O. Iarko; S. L. Prosvirnin

doi:10.1615/RadioPhysicsRadioAstronomy.v1.i3.50

Radio Physics and Radio Astronomy

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ISSN Print: 2152-274X

ISSN Online: 2152-2758

TRAPPED-MODE RESONANCES IN LIGHT DIFFRACTION BY A PLANAR DOUBLY PERIODIC STRUCTURE WITH ASYMMETRIC METAL ELEMENTS

Volume 1, Issue 3, 2010, pp. 221-231

DOI: 10.1615/RadioPhysicsRadioAstronomy.v1.i3.50

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V. V. Khardikov
V. Karazin National University of Kharkov, Institute of Radio Astronomy, National Academy of Sciences of Ukraine, Kharkov, Ukraine

E. O. Iarko
Institute of Radio Astronomy, National Academy of Sciences of Ukraine

S. L. Prosvirnin
V. Karazin National University of Kharkov; Institute of Radio Astronomy, National Academy of Sciences of Ukraine

ABSTRACT

The diffraction of a plane wave normally incident on a planar periodic structure with a square periodic cell of two slightly asymmetric complex-shaped metal elements has been numerically solved for the optical and infrared regions. The solution is due to the mapped pseudospectral Fourier method combined with the auxiliary differential equation technique and the pole model for describing the metal permittivity dispersion. It has been found that the structure can form a trapped-mode resonance outperforming in Q the plasmon-polariton resonances in structures with single metal element cells. It has been first shown that the high-order trapped-mode resonance can outperform in Q the corresponding fundamental trapped-mode resonance.

KEY WORDS: light diffraction, doubly periodic planar structure, trapped-mode resonance, pseudospectral time domain method

CITED BY

Khardikov Vyacheslav V, Iarko Ekaterina O, Prosvirnin Sergey L, A giant red shift and enhancement of the light confinement in a planar array of dielectric bars, Journal of Optics, 14, 3, 2012. Crossref
Khardikov V., Iarko E., Prosvirnin S., Trapped mode resonances in optical planar periodical structures with metal and dielectric elements, 2010 International Conference on Mathematical Methods in Electromagnetic Theory, 2010. Crossref

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