Three-dimensional beaming of surface plasmon polaritons generated by subwavelength metallic hole

Hwi Kim; Junghyun Park; Byoungho Lee

doi:10.1117/12.764084

15 January 2008 Three-dimensional beaming of surface plasmon polaritons generated by subwavelength metallic hole

Hwi Kim, Junghyun Park, Byoungho Lee

Proceedings Volume 6837, Information Optics and Photonics Technologies II; 68370F (2008) https://doi.org/10.1117/12.764084
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Diffraction of optical field by subwavelength metallic hole is analyzed with the rigorous coupled wave analysis. The surface plasmon polaritons generated in this diffraction process can be coupled to directional beam-like radiation modes by circular surface grating structures. A simple holographic grating design equation is proposed for realizing various beaming of surface plasmon polaritons. The designed grating structures for on-axis beaming and Bessel-like beaming are demonstrated with three-dimensional electromagnetic field visualization. We discuss several interesting physical features in the diffractive beaming of surface plasmon polaritons by circular surface grating structures.

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Hwi Kim, Junghyun Park, and Byoungho Lee "Three-dimensional beaming of surface plasmon polaritons generated by subwavelength metallic hole", Proc. SPIE 6837, Information Optics and Photonics Technologies II, 68370F (15 January 2008); https://doi.org/10.1117/12.764084

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KEYWORDS

Diffraction gratings

Optical design

Diffraction

Surface plasmon polaritons

Holography

Binary data

Electromagnetism

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