Directional control of light-emitting-diode emission via a subwavelength-apertured metal surface

Michael D. Harries, Huw D. Summers

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

A thin Au film with a hexagonal array of subwavelength apertures has been integrated onto a semiconductor light-emitting diode. This produces a highly directional far-field pattern with a strong polarization dependence and alters the spectral shape of the light emission from the semiconductor. A two-dimensional k-space analysis of the experimental data shows good agreement with a simple model of surface plasmon to photon coupling via the periodic structure of the metal film.

Original languageEnglish (US)
Pages (from-to)2197-2199
Number of pages3
JournalIEEE Photonics Technology Letters
Volume18
Issue number21
DOIs
StatePublished - Nov 1 2006

Keywords

  • Light-emitting diodes (LEDS)
  • Optical beams
  • Plasmons

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

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