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

J. Li; H. Iu; D. Y. 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, D. Y. Lei, J. T. K. Wan, J. B. Xu, H. P. Ho, M. Y. Waye, H. C. Ong^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

34 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 λⁿ dependence, 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 - 4 May 2009
Externally published	Yes

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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 λn dependence, 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.",

author = "J. Li and H. Iu and Lei, {D. Y.} and Wan, {J. T. K.} and Xu, {J. B.} and Ho, {H. P.} and Waye, {M. Y.} and Ong, {H. C.}",

year = "2009",

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doi = "10.1063/1.3132585",

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T1 - Dependence of surface plasmon lifetimes on the hole size in two-dimensional metallic arrays

AU - Li, J.

AU - Iu, H.

AU - Lei, D. Y.

AU - Wan, J. T. K.

AU - Xu, J. B.

AU - Ho, H. P.

AU - Waye, M. Y.

AU - Ong, H. C.

PY - 2009/5/4

Y1 - 2009/5/4

N2 - 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 λn dependence, 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.

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 λn dependence, 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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DO - 10.1063/1.3132585

M3 - RGC 21 - Publication in refereed journal

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VL - 94

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 183112

ER -

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

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