Reverse design of a bull's eye structure based on the plasmonic far-field pattern

Akira Yamada, Mitsuhiro Terakawa

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    We present a novel concept on designing a bull's eye structure for a single-wavelength optical source. The plasmonic far-field around a subwavelength aperture on a thin gold film is calculated by finite-difference time-domain method. Based on the annular field intensity distribution on the film surface, we present a method for determining a fairly optimal first groove radius and a periodicity of the grooves that show enhanced transmission. By additionally fine-tuning groove width and groove depth, we have achieved a transmission factor of 9.74. Our novel method has high potential in applications such as silicon infrared sensors.

    Original languageEnglish
    Pages (from-to)21273-21284
    Number of pages12
    JournalOptics Express
    Volume21
    Issue number18
    DOIs
    Publication statusPublished - 2013 Sep 9

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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