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
Full text not available from this repository.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.