Near-field spectroscopic properties of complementary gold nanostructures: Applicability of Babinet's principle in the optical region

Hidetoshi Mizobata, Kosei Ueno, Hiroaki Misawa, Hiromi Okamoto, Kohei Imura

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    We examine the far-field and near-field properties of complementary screens made of nanostructured gold thin films, a rectangular nanowire and a nanovoid, using an aperturetype scanning near-field optical microscope and electromagnetic field calculations, and discuss the applicability of Babinet's principle in the optical region. The far-field transmission spectra of the complementary screens are considerably different from each other. On the other hand, genuine near-field extinction spectra exhibit nearly complementary characteristics. The spatial features of the observed near-field images for the complementary screens show little correlation. We have found from the Fourier analysis of the simulated images that high spatial-frequency components of the electromagnetic fields show mutual spatial correlation. These results suggest that Babinet's principle is applicable to the high spatial-frequency components of electromagnetic fields for the complementary screens.

    Original languageEnglish
    Pages (from-to)5279-5289
    Number of pages11
    JournalOptics Express
    Volume25
    Issue number5
    DOIs
    Publication statusPublished - 2017 Mar 6

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    near fields
    gold
    electromagnetic fields
    far fields
    Fourier analysis
    optical microscopes
    extinction
    nanowires
    scanning
    thin films

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Cite this

    Near-field spectroscopic properties of complementary gold nanostructures : Applicability of Babinet's principle in the optical region. / Mizobata, Hidetoshi; Ueno, Kosei; Misawa, Hiroaki; Okamoto, Hiromi; Imura, Kohei.

    In: Optics Express, Vol. 25, No. 5, 06.03.2017, p. 5279-5289.

    Research output: Contribution to journalArticle

    Mizobata, Hidetoshi ; Ueno, Kosei ; Misawa, Hiroaki ; Okamoto, Hiromi ; Imura, Kohei. / Near-field spectroscopic properties of complementary gold nanostructures : Applicability of Babinet's principle in the optical region. In: Optics Express. 2017 ; Vol. 25, No. 5. pp. 5279-5289.
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    AU - Imura, Kohei

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