Diabolical point and conical-like diffraction in periodic plasmonic nanostructures

被引：38

作者：

Nam, Sung Hyun ^{[1
]}

Taylor, Antoinette J. ^{[1
]}

Efimov, Anatoly ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 10期

关键词：

WAVE-GUIDE; ARRAYS;

D O I：

10.1364/OE.18.010120

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present the formation of a singular (diabolical) point in k-space from a periodic metal-dielectric waveguide array. The singularity originates from the balance between alternating normal and anomalous coupling. We numerically demonstrate a strong diffraction anomaly (conical-like diffraction) near the singular point. We also show the evolution of the diffraction pattern with band deformation. The resultant peculiar propagation dynamics of surface plasmon polaritons could provide a new toolset for manipulating light on the nano-scale. (C)2010 Optical Society of America

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收藏

页码：10120 / 10126

页数：7

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