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Broad-angle and efficient unidirectional excitations of surface plasmons with dielectric-coated subwavelength metallic periodic nanoslits

We experimentally demonstrate a mechanism of broad-angle and efficient unidirectional excitations of surface plasmon polaritons (SPPs). By combining the plasmonic critical angle phenomenon and grating effects, unidirectional excitation of SPPs with broad incident angular width up to 25° and high ext... Full description

Journal Title: Applied Physics Letters Sep 1, 2014, Vol.105(9)
Main Author: Sun, Lin
Other Authors: Wang, Jia , Li, Kun
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0003-6951 ; E-ISSN: 1077-3118
Link: http://search.proquest.com/docview/2126561073/?pq-origsite=primo
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recordid: proquest2126561073
title: Broad-angle and efficient unidirectional excitations of surface plasmons with dielectric-coated subwavelength metallic periodic nanoslits
format: Article
creator:
  • Sun, Lin
  • Wang, Jia
  • Li, Kun
subjects:
  • Critical Angle
  • Polaritons
  • Computer Simulation
  • Plasmons
  • Extinction
ispartof: Applied Physics Letters, Sep 1, 2014, Vol.105(9)
description: We experimentally demonstrate a mechanism of broad-angle and efficient unidirectional excitations of surface plasmon polaritons (SPPs). By combining the plasmonic critical angle phenomenon and grating effects, unidirectional excitation of SPPs with broad incident angular width up to 25° and high extinction ratio better than 10 dB was experimentally demonstrated. A peak extinction ratio of 17 dB was achieved. The proposed structure was also numerically simulated showing good agreement with experimental measurement. The operation principle was numerically and experimentally clarified through compare and analysis.
language: eng
source:
identifier: ISSN: 0003-6951 ; E-ISSN: 1077-3118
fulltext: fulltext
issn:
  • 00036951
  • 0003-6951
  • 10773118
  • 1077-3118
url: Link


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titleBroad-angle and efficient unidirectional excitations of surface plasmons with dielectric-coated subwavelength metallic periodic nanoslits
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identifierISSN: 0003-6951 ; E-ISSN: 1077-3118
subjectCritical Angle ; Polaritons ; Computer Simulation ; Plasmons ; Extinction
descriptionWe experimentally demonstrate a mechanism of broad-angle and efficient unidirectional excitations of surface plasmon polaritons (SPPs). By combining the plasmonic critical angle phenomenon and grating effects, unidirectional excitation of SPPs with broad incident angular width up to 25° and high extinction ratio better than 10 dB was experimentally demonstrated. A peak extinction ratio of 17 dB was achieved. The proposed structure was also numerically simulated showing good agreement with experimental measurement. The operation principle was numerically and experimentally clarified through compare and analysis.
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abstractWe experimentally demonstrate a mechanism of broad-angle and efficient unidirectional excitations of surface plasmon polaritons (SPPs). By combining the plasmonic critical angle phenomenon and grating effects, unidirectional excitation of SPPs with broad incident angular width up to 25° and high extinction ratio better than 10 dB was experimentally demonstrated. A peak extinction ratio of 17 dB was achieved. The proposed structure was also numerically simulated showing good agreement with experimental measurement. The operation principle was numerically and experimentally clarified through compare and analysis.
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pubAmerican Institute of Physics
urlhttp://search.proquest.com/docview/2126561073/
doi10.1063/1.4893728
date2014-09-01