Mie plasmon enhanced diffraction of light from nanoporous metal surfaces

Tatiana V. Teperik*, Vyacheslav V. Popov, F. Javier García De Abajo, Tim A. Kelf, Yoshihiro Sugawara, Jeremy J. Baumberg, Mamdouh Abdelsalem, Philip N. Bartlett

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)
    34 Downloads (Pure)

    Abstract

    The diffractive properties of gold films with a periodic lattice of sub-micron voids beneath the surface are investigated. It has been shown that nanoporous metal surfaces exhibit frequency-selective non-dispersive diffraction enhanced by Mie plasmons in nanovoids, which leads to absolute angular tolerance of the diffracted beam intensity that can be useful for a variety of applications covering angle-tolerant optical filters, deflectors, absorbers, and beam splitters. Diffraction spectra are measured and calculated to support these conclusions, showing good qualitative agreement.

    Original languageEnglish
    Pages (from-to)11964-11971
    Number of pages8
    JournalOptics Express
    Volume14
    Issue number25
    DOIs
    Publication statusPublished - 11 Dec 2006

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