Dependence of surface plasmon lifetimes on the hole size in two-dimensional metallic arrays

J. Li; H. Iu; Dangyuan Lei; J. T.K. Wan; J. B. Xu; H. P. Ho; M. Y. Waye; H. C. Ong

doi:10.1063/1.3132585

Dependence of surface plasmon lifetimes on the hole size in two-dimensional metallic arrays

J. Li, H. Iu, Dangyuan Lei, J. T.K. Wan, J. B. Xu, H. P. Ho, M. Y. Waye, H. C. Ong

Research output: Journal article publication › Journal article › Academic research › peer-review

32 Citations (Scopus)

Abstract

Two-dimensional metallic arrays with different hole sizes have been fabricated by using interference lithography and their optical properties have been studied by using angle-dependent reflectivity measurements. The lifetimes of different surface plasmon polariton (SPP) modes have been determined from the linewidths of reflectivity spectra for different resonance wavelengths and hole sizes. It is found that the lifetimes display an λndependence, where n is strongly dependent on hole radius. In particular, n is found to be ∼4 for small hole, as expected from Rayleigh dipole scattering, and linearly increases to ∼11 when the hole radius is increased to 177 nm. By plotting n with hole radius, the relationship between n and hole radius is found.

Original language	English
Article number	183112
Journal	Applied Physics Letters
Volume	94
Issue number	18
DOIs	https://doi.org/10.1063/1.3132585
Publication status	Published - 18 May 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3132585

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title = "Dependence of surface plasmon lifetimes on the hole size in two-dimensional metallic arrays",

abstract = "Two-dimensional metallic arrays with different hole sizes have been fabricated by using interference lithography and their optical properties have been studied by using angle-dependent reflectivity measurements. The lifetimes of different surface plasmon polariton (SPP) modes have been determined from the linewidths of reflectivity spectra for different resonance wavelengths and hole sizes. It is found that the lifetimes display an λndependence, where n is strongly dependent on hole radius. In particular, n is found to be ∼4 for small hole, as expected from Rayleigh dipole scattering, and linearly increases to ∼11 when the hole radius is increased to 177 nm. By plotting n with hole radius, the relationship between n and hole radius is found.",

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AU - Iu, H.

AU - Lei, Dangyuan

AU - Wan, J. T.K.

AU - Xu, J. B.

AU - Ho, H. P.

AU - Waye, M. Y.

AU - Ong, H. C.

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AB - Two-dimensional metallic arrays with different hole sizes have been fabricated by using interference lithography and their optical properties have been studied by using angle-dependent reflectivity measurements. The lifetimes of different surface plasmon polariton (SPP) modes have been determined from the linewidths of reflectivity spectra for different resonance wavelengths and hole sizes. It is found that the lifetimes display an λndependence, where n is strongly dependent on hole radius. In particular, n is found to be ∼4 for small hole, as expected from Rayleigh dipole scattering, and linearly increases to ∼11 when the hole radius is increased to 177 nm. By plotting n with hole radius, the relationship between n and hole radius is found.

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Dependence of surface plasmon lifetimes on the hole size in two-dimensional metallic arrays

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