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Proceedings Paper

Plasmon resonance in subwavelength gratings: influence of incident beam width
Author(s): N. I. Petrov; V. A. Danilov; V. V. Popov; B. A. Usievich
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Paper Abstract

Diffraction of light of a visible spectral range by subwavelength metal gratings is investigated theoretically and experimentally. The diffraction efficiencies of the gratings made of various metals (Ni, Ag, Al, etc.) with different depths of the profile are calculated and measurements are carried out. It is demonstrated that under certain conditions an effect of plasmon resonance occurs, at which a complete absorption of the incident light takes place. It is demonstrated, that the influence of the incident beam width on the diffraction efficiency and the electric field profile of the reflected beam is significant for the incident angles, at which the plasmon resonance occurs. It is shown that the incident beam width must be larger than the propagation distance of the surface plasmon in order to couple energy effectively into the plasmon mode.

Paper Details

Date Published: 30 April 2019
PDF: 8 pages
Proc. SPIE 11025, Metamaterials XII, 110250P (30 April 2019); doi: 10.1117/12.2520514
Show Author Affiliations
N. I. Petrov, Scientific and Technological Ctr. for Unique Instrumentation (Russian Federation)
V. A. Danilov, Scientific and Technological Ctr. for Unique Instrumentation (Russian Federation)
V. V. Popov, Lomonosov Moscow State Univ. (Russian Federation)
B. A. Usievich, Prokhorov General Physics Institute (Russian Federation)

Published in SPIE Proceedings Vol. 11025:
Metamaterials XII
Vladimír Kuzmiak; Peter Markos; Tomasz Szoplik, Editor(s)

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