Electron-beam-driven collective-mode metamaterial light source

Adamo, Giorgio and Ou, Jun-Yu and So, J.K. and Jenkins, S.D. and De Angelis, F. and MacDonald, Kevin F. and Di Fabrizio, E. and Ruostekoski, J. and Zheludev, Nikolay I. (2012) Electron-beam-driven collective-mode metamaterial light source. Physical review letters, 109 (21). ISSN 1079-7114

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
123719
Deposited By:
Deposited On:
23 Feb 2018 11:00
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Sep 2020 03:48