An Improved Design Formula for the Plasmonic Directional Beaming of Light

An Improved Design Formula for the Plasmonic Directional Beaming of Light

An improved formula is suggested for the estimation of the diffraction angles of surface plasmon polaritons via dielectric or metal-dielectric ridge gratings. We propose on-axis and off-axis directional beaming structures designed by this formula and prove their appropriateness using rigorous numeri...

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Veröffentlicht in:IEEE photonics technology letters 2014-10, Vol.26 (20), p.2051-2054
Hauptverfasser: Hwang, Yoon Sung, Kim, Jungho, Kim, Kyoung-Youm
Format: Artikel
Sprache:eng
Schlagworte:
Beams (radiation)
Diffraction
Diffraction gratings
Focusing
Gratings
Mathematical analysis
Mathematical models
Metals
Optical surface waves
Plasmonics
Plasmons
Ridges
Surface waves
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Beschreibung
Zusammenfassung:An improved formula is suggested for the estimation of the diffraction angles of surface plasmon polaritons via dielectric or metal-dielectric ridge gratings. We propose on-axis and off-axis directional beaming structures designed by this formula and prove their appropriateness using rigorous numerical calculations. A plasmonic beam focusing structure is also proposed.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2014.2346624