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Phys. Rev. Lett. 86, 1110 - 1113 (2001)

Near-Field Distribution of Optical Transmission of Periodic Subwavelength Holes in a Metal Film

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Laurent Salomon1, Frédéric Grillot1, Anatoly V. Zayats2 *, and Frédérique de Fornel1
1Laboratoire de Physique de l'Université de Bourgogne, CNRS UPR 5027, B.P. 47870-21078, Dijon Cedex, France
2School of Mathematics and Physics, The Queen's University of Belfast, Belfast BT7 1NN, United Kingdom

Received 17 July 2000

Optical transmission of a two-dimensional array of subwavelength holes in a metal film has been numerically studied using a differential method. Transmission spectra have been calculated showing a significant increase of the transmission in certain spectral ranges corresponding to the excitation of the surface polariton Bloch waves on a metal surface with a periodic hole structure. Under the enhanced transmission conditions, the near-field distribution of the transmitted light reveals an intensity enhancement greater than 2 orders of magnitude in localized (∼40 nm) spots resulting from the interference of the surface polaritons Bragg scattered by the holes in an array.


©2001 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.86.1110
DOI: 10.1103/PhysRevLett.86.1110
PACS: 78.20.Bh, 42.25.Fx

* Corresponding author.Email address: a.zayats@qub.ac.uk.

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