Electron-beam-driven collective-mode metamaterial light source

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...

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Bibliographic Details
Main Authors: Adamo, Giorgio, Angelis, F. De, Ou, J. Y., So, J. K., Jenkins, S. D., Ruostekoski, J., Fabrizio, Enzo Di, MacDonald, Kevin F., Zheludev, Nikolay I.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/95047
http://hdl.handle.net/10220/9394
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Institution: Nanyang Technological University
Language: English
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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.

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