Electron-beam-driven collective-mode metamaterial light source

We demonstrate experimentally that the energy from a highly localized free-electron-beam excitation can be converted via a planar plasmonic metamaterial to a low-divergence free-space light beam. This emission, which emanates from a collectively oscillating coupled metamolecule nanoantenna ensemble...

Full description

Saved in:

Bibliographic Details
Published in:	Physical review letters Vol. 109; no. 21; p. 217401
Main Authors:	Adamo, G, Ou, J Y, So, J K, Jenkins, S D, De Angelis, F, MacDonald, K F, Di Fabrizio, E, Ruostekoski, J, Zheludev, N I
Format:	Journal Article
Language:	English
Published:	United States 21-11-2012
Subjects:	Electromagnetic Phenomena Electrons Light Nanostructures - chemistry Optics and Photonics - methods Surface Plasmon Resonance
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	We demonstrate experimentally that the energy from a highly localized free-electron-beam excitation can be converted via a planar plasmonic metamaterial to a low-divergence free-space light beam. This emission, which emanates from a collectively oscillating coupled metamolecule nanoantenna ensemble much larger in size than the initial excitation, is distinctly different from cathodoluminescence and bears some similarity with laser light. It offers a novel, flexible paradigm for the development of scalable, threshold-free light sources.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.109.217401