Strong polarization dependence in the optical transmission through a bull's eye with an elliptical sub-wavelength aperture

Marzieh Pournoury, Hesam Edin Arabi, Kyunghwan Oh

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Strong polarization dependence in the optical transmission through a bull's eye with a central elliptical aperture in a thin Au film is analyzed numerically by finite difference time domain (FDTD) method. Focusing on the impacts of the structural anisotropy, detailed investigation of polarization dependent enhanced optical transmission (EOT) of light is discussed in terms of the resonance intensity variations caused by the incident light polarization and the geometrical parameters of bull's eye. We found that the light polarized along the minor axis of the elliptic aperture has significantly larger EOT by more than three orders of magnitude than the other orthogonal polarization, which can be further utilized in polarized EOT devices.

Original languageEnglish
Pages (from-to)26798-26805
Number of pages8
JournalOptics Express
Volume20
Issue number24
DOIs
Publication statusPublished - 2012 Nov 19

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apertures
polarization
wavelengths
finite difference time domain method
polarized light
anisotropy
thin films

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

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abstract = "Strong polarization dependence in the optical transmission through a bull's eye with a central elliptical aperture in a thin Au film is analyzed numerically by finite difference time domain (FDTD) method. Focusing on the impacts of the structural anisotropy, detailed investigation of polarization dependent enhanced optical transmission (EOT) of light is discussed in terms of the resonance intensity variations caused by the incident light polarization and the geometrical parameters of bull's eye. We found that the light polarized along the minor axis of the elliptic aperture has significantly larger EOT by more than three orders of magnitude than the other orthogonal polarization, which can be further utilized in polarized EOT devices.",
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Strong polarization dependence in the optical transmission through a bull's eye with an elliptical sub-wavelength aperture. / Pournoury, Marzieh; Arabi, Hesam Edin; Oh, Kyunghwan.

In: Optics Express, Vol. 20, No. 24, 19.11.2012, p. 26798-26805.

Research output: Contribution to journalArticle

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