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Spectrally and Spatially Resolved Smith-Purcell Radiation in Plasmonic Crystals with Short-Range Disorder

Author(s)
Shiloh, R.; Remez, R.; Arie, A.; Kaminer, Ido Efraim; Kooi, Steven E; Zhen, Bo; Shen, Y.; Lopez, J. J.; Skirlo, Scott A.; Yang, Y.; Joannopoulos, John; Soljacic, Marin; ... Show more Show less
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Abstract
Electrons interacting with plasmonic structures can give rise to resonant excitations in localized plasmonic cavities and to collective excitations in periodic structures. We investigate the presence of resonant features and disorder in the conventional Smith-Purcell effect (electrons interacting with periodic structures) and observe the simultaneous excitation of both the plasmonic resonances and the collective excitations. For this purpose, we introduce a new scanning-electron-microscope-based setup that allows us to probe and directly image new features of electron-photon interactions in nanophotonic structures like plasmonic crystals with strong disorder. Our work creates new possibilities for probing nanostructures with free electrons, with potential applications that include tunable sources of short-wavelength radiation and plasmonic-based particle accelerators.
Date issued
2017-01
URI
http://hdl.handle.net/1721.1/106612
Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics
Journal
Physical Review X
Publisher
American Physical Society
Citation
Kaminer, I. et al. “Spectrally and Spatially Resolved Smith-Purcell Radiation in Plasmonic Crystals with Short-Range Disorder.” Physical Review X 7.1 (2017): n. pag. © 2017 American Physical Society.
Version: Final published version
ISSN
2160-3308

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