Magnetized Spiral Chains of Plasmonic Ellipsoids for One-Way Optical Waveguides

被引：97

作者：

Hadad, Y. ^{[1
]}

Steinberg, Ben Z. ^{[1
]}

机构：

[1] Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, Israel

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 23期

关键词：

Plasmonics;

D O I：

10.1103/PhysRevLett.105.233904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

When a linear chain of plasmonic nanoparticles is subject to longitudinal magnetic field, it exhibits optical Faraday rotation. If the magnetized nanoparticles are plasmonic ellipsoids arranged as a spiral chain, the interplay between the Faraday rotation and the geometrical spiral rotation (structural chirality) can strongly enhance nonreciprocity. This interplay forms a waveguide that permits one-way propagation only, within four disjoint frequency bands, two bands for each direction.

引用

页数：4