Enhancement of Optical Magnetic Modes by Controlling the Handedness of Symmetry Breaking in Fano Metamolecules

Author

Bo Wang ; Yan Zhang

Author_Institution

Dept. of Phys., Harbin Inst. of Technol., Harbin, China

Volume

51

Issue

6

fYear

2015

fDate

Jun-15

Firstpage

1

Lastpage

8

Abstract

Artificial plasmonic magnetic metamaterials consisting of closely spaced metallic nanoparticles have been extensively investigated in recent years. In this paper, a novel approach to enhancing the optical magnetic mode in a nanoquadrumer Fano metamolecule by controlling the handedness of symmetry breaking under linearly polarized illumination is proposed. Circular dichroism of the asymmetrical metamolecule under circularly polarized illumination can also be generated. The results are analyzed using coupled-mode theory. This paper will be of benefit to artificial magnetism design, negative permeability metamaterial engineering, and optical activity tuning.

Keywords

circular dichroism; coupled mode analysis; light polarisation; nanophotonics; optical metamaterials; artificial magnetism design; artificial plasmonic magnetic metamaterials; asymmetrical metamolecule; circular dichroism; circularly polarized illumination; closely spaced metallic nanoparticles; coupled-mode theory; linearly polarized illumination; nanoquadrumer Fano metamolecule; negative permeability metamaterial engineering; optical activity tuning; optical magnetic mode enhancement; symmetry breaking handedness; Lighting; Magnetic moments; Magnetic resonance; Magnetic resonance imaging; Magnetic separation; Magnetomechanical effects; Optical polarization; Magnetic mode; handedness; magnetic metamaterials; symmetry breaking;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2015.2427034

Filename

7096938