Strong influence of hole shape on extraordinary transmission through periodic arrays

K.J. Klein Koerkamp; S. Enoch; Franciscus B. Segerink; N.F. van Hulst; L. Kuipers

doi:10.1103/PhysRevLett.92.183901

Strong influence of hole shape on extraordinary transmission through periodic arrays

K.J. Klein Koerkamp, S. Enoch, Franciscus B. Segerink, N.F. van Hulst, L. Kuipers

Optical Sciences

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Abstract

We show that extraordinary light transmission of periodic subwavelength hole arrays, generally attributed to surface-plasmon resonances, is strongly influenced by the hole shape. Both experiments and calculations, based on a Fourier modal method, demonstrate that a shape change from circular to rectangular increases the normalized transmission by an order of magnitude while the hole area decreases. Moreover, the spectra exhibit large redshifts (~2500 cm-1). A comparison with the transmission of isolated holes shows that shape resonances of the rectangular holes play a dominant role.

Original language	Undefined
Pages (from-to)	183901-1-183901-4
Number of pages	4
Journal	Physical review letters
Volume	92
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.92.183901
Publication status	Published - 2004

Keywords

IR-47573
METIS-218154

Access to Document

10.1103/PhysRevLett.92.183901

114

Cite this

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abstract = "We show that extraordinary light transmission of periodic subwavelength hole arrays, generally attributed to surface-plasmon resonances, is strongly influenced by the hole shape. Both experiments and calculations, based on a Fourier modal method, demonstrate that a shape change from circular to rectangular increases the normalized transmission by an order of magnitude while the hole area decreases. Moreover, the spectra exhibit large redshifts (~2500 cm-1). A comparison with the transmission of isolated holes shows that shape resonances of the rectangular holes play a dominant role.",

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AU - Kuipers, L.

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KW - METIS-218154

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DO - 10.1103/PhysRevLett.92.183901

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