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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S1 — Jan. 13, 2014
  • pp: A155–A166

Enhancements of the emission and light extraction of a radiating dipole coupled with localized surface plasmon induced on a surface metal nanoparticle in a light-emitting device

Yang Kuo, Hao-Tsung Chen, Wen-Yen Chang, Horng-Shyang Chen, C. C. Yang, and Yean-Woei Kiang  »View Author Affiliations


Optics Express, Vol. 22, Issue S1, pp. A155-A166 (2014)
http://dx.doi.org/10.1364/OE.22.00A155


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Abstract

The radiated power enhancement and more congregated radiation of a radiating dipole within a GaN material when it is coupled with the localized surface plasmon (LSP) resonance modes induced on a surface Ag nanoparticle (NP) are numerically demonstrated. The numerical study is based on an algorithm including the induction of LSP resonance on the Ag NP by the source dipole and the feedback effect of the LSP resonance field on the source dipole behavior. The spectral peaks of radiated power enhancement correspond to the substrate LSP resonance modes with mode fields mainly distributed around the bottom of the Ag NP such that the coupling system radiates mainly into the GaN half-space. By moving the radiating dipole laterally away from the bottom of the Ag NP, the spectral peaks of radiated power enhancement red shift and their levels diminish with increasing lateral distance. The radiation patterns in the GaN half-space show more congregated radiation around the vertical direction, indicating that the light extraction efficiency can be enhanced in an LSP-coupled light-emitting device with surface metal NPs.

© 2014 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Light-Emitting Diodes

History
Original Manuscript: November 25, 2013
Revised Manuscript: December 22, 2013
Manuscript Accepted: January 2, 2014
Published: January 9, 2014

Citation
Yang Kuo, Hao-Tsung Chen, Wen-Yen Chang, Horng-Shyang Chen, C. C. Yang, and Yean-Woei Kiang, "Enhancements of the emission and light extraction of a radiating dipole coupled with localized surface plasmon induced on a surface metal nanoparticle in a light-emitting device," Opt. Express 22, A155-A166 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-S1-A155


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