Near-field optical properties and surface plasmon effects generated by a dielectric hole in a silver-shell nanocylinder pair

被引：59

作者：

Chau, Yuan-Fong ^{[1
]}

Yeh, Han-Hsuan ^{[1
]}

Tsai, Din Ping ^{[2
,3
]}

机构：

[1] Ching Yun Univ, Dept Elect Engn, Jhongli 320, Taiwan

[2] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Ctr Nanostorage Res, Taipei 10617, Taiwan

来源：

APPLIED OPTICS | 2008年 / 47卷 / 30期

关键词：

D O I：

10.1364/AO.47.005557

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Near-field optical properties and surface plasmon effects in a silver-shell nanocylinder pair with five different dielectric holes (DHs) that interact with a transverse magnetic mode incident plane wave are simulated by use of the finite-element method, which includes the investigation of particle-particle interaction. The proposed structure exhibits a redshifted localized surface plasmon that can be tuned over an extended wavelength range by varying the dielectric constant in DHs and the thickness of the nanocylinder silver shell. The increase in the near-field intensity is attributed to a larger effective size of DH that is filled with a higher refractive medium. 0 2008 Optical Society of America

引用

页码：5557 / 5561

页数：5

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