Theoretical and experimental investigation of strongly localized plasmons on triangular metal wedges for subwavelength waveguiding

被引：240

作者：

Pile, DFP

Ogawa, T

Gramotnev, DK

Okamoto, T

Haraguchi, M

Fukui, M

Matsuo, S

机构：

[1] Univ Tokushima, Dept Opt Sci & Technol, Fac Engn, Tokushima 7708506, Japan

[2] Queensland Univ Technol, Appl Opt Program, Sch Phys & Chem Sci, Brisbane, Qld 4001, Australia

[3] Univ Tokushima, Dept Ecosyst Engn, Grad Sch Engn, Tokushima 7708506, Japan

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 06期

基金：

日本学术振兴会;

关键词：

D O I：

10.1063/1.1991990

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report numerical analysis and experimental observation of strongly localized plasmons guided by a triangular metal wedge. Dispersion and dissipation of such wedge plasmons are analyzed using the finite-difference time-domain algorithm. Experimental observation is conducted by the end-fire excitation and near-field detection of the predicted plasmons on a 40 degrees silver nanowedge. Good agreement with the theoretically predicted propagation distances is demonstrated. Differences between the theoretical and experimental field distribution are explained by insufficient resolution of the near-field optical probe. (c) 2005 American Institute of Physics.

引用

页数：3

共 25 条

[1] DISPERSION ANALYSIS OF ANISOTROPIC INHOMOGENEOUS WAVE-GUIDES USING COMPACT 2D-FDTD [J].