Effects of dielectric substrate properties for optical phenomena in a nanoscale ridge aperture

Taeseob Kim, Won Sup Lee, Sung Mook Kang, No Cheol Park, Kyoung Su Park, Young Pil Park

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this paper, we show that the increase in power throughput is dependent on the thickness and the relative permittivity of the dielectric substrate in the aperture-on-dielectric-substrate configuration. We also show that, similar to a metal nanoparticle, an increase in the medium dielectric constant results in a red-shift in the plasmon resonance of a nanoscale ridge aperture. These results, which are verified by a numerical analysis, provide a new understanding of the phenomenon of surface-plasmon-enhanced transmission. We demonstrate that the red-shifted wavelength and dielectric properties can compensate for the optical loss due to plasmon red-shift. In addition, the dielectric substrate layer behaves like a FabryPérot optical resonator, resulting in coherent constructive interference. The simulation results show that the |E| 2 intensity of the triangular aperture is 200% greater when this dielectric effect and red-shift resonance are considered.

Original languageEnglish
Article number045001
JournalJournal of Optics
Volume14
Issue number4
DOIs
Publication statusPublished - 2012 Apr 1

Fingerprint

ridges
apertures
red shift
Substrates
Permittivity
permittivity
Optical resonators
Optical losses
optical resonators
Metal nanoparticles
Dielectric properties
numerical analysis
dielectric properties
Numerical analysis
Throughput
interference
Wavelength
nanoparticles
configurations
wavelengths

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

Kim, Taeseob ; Lee, Won Sup ; Kang, Sung Mook ; Park, No Cheol ; Park, Kyoung Su ; Park, Young Pil. / Effects of dielectric substrate properties for optical phenomena in a nanoscale ridge aperture. In: Journal of Optics. 2012 ; Vol. 14, No. 4.
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Effects of dielectric substrate properties for optical phenomena in a nanoscale ridge aperture. / Kim, Taeseob; Lee, Won Sup; Kang, Sung Mook; Park, No Cheol; Park, Kyoung Su; Park, Young Pil.

In: Journal of Optics, Vol. 14, No. 4, 045001, 01.04.2012.

Research output: Contribution to journalArticle

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