Spectrally and Spatially Resolved Smith-Purcell Radiation in Plasmonic Crystals with Short-Range Disorder
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PhysRevX.7.011003.pdf
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2.87 MB
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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.
Date Issued
January 2017
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
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.
MIT Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1103/PhysRevX.7.011003
