Enhancement of local electromagnetic fields in plasmonic crystals of coaxial metallic nanostructures

被引：5

作者：

Iwanaga, Masanobu ^{[1
,2
]}

Ikeda, Naoki ^{[3
]}

Sugimoto, Yoshimasa ^{[3
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

[2] Japan Sci & Technol Agcy JST, PRESTO, Kawaguchi, Saitama 3320012, Japan

[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 04期

关键词：

OPTICAL-PROPERTIES; WAVE-GUIDES; TRANSMISSION; FORMULATION; GRATINGS; DIMERS; LIGHT;

D O I：

10.1103/PhysRevB.85.045427

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

We have experimentally and numerically examined resonant modes in plasmonic crystals (PlCs) of coaxial metallic nanostructures. Resonance enhancements of local electromagnetic (EM) fields were evaluated quantitatively. We clarified that a local mode induced in the coaxial metallic structure shows the most significant field enhancement. The enhancement factors are comprehensively discussed by comparison with other PlCs, indicating that the coaxial PlC provides a locally intense electric field and EM power flux in the annular slit of 50-nm metallic gaps.

引用

页数：6

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