Reverse design of a bull's eye structure for oblique incidence and wider angular transmission efficiency

Akira Yamada, Mitsuhiro Terakawa

    研究成果: Article査読

    抄録

    We present a design method of a bull's eye structure with asymmetric grooves for focusing oblique incident light. The design method is capable of designing transmission peaks to a desired oblique angle with capability of collecting light from a wider range of angles. The bull's eye groove geometry for oblique incidence is designed based on the electric field intensity pattern around an isolated subwavelength aperture on a thin gold film at oblique incidence, calculated by the finite difference time domain method. Wide angular transmission efficiency is successfully achieved by overlapping two different bull's eye groove patterns designed with different peak angles. Our novel design method would overcome the angular limitations of the conventional methods.

    本文言語English
    ページ(範囲)3517-3522
    ページ数6
    ジャーナルApplied Optics
    54
    11
    DOI
    出版ステータスPublished - 2015 4 10

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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