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Title: Reverse surface-polariton cherenkov radiation
Authors: Luo, Yu
Tao, Jin
Wang, Qi Jie
Zhang, Jingjing
Keywords: Optical physics
Other photonics
Issue Date: 2016
Source: Tao, J., Wang, Q. J., Zhang, J., & Luo, Y. (2016). Reverse surface-polariton cherenkov radiation. Scientific Reports, 6, 30704-.
Series/Report no.: Scientific Reports
Abstract: The existence of reverse Cherenkov radiation for surface plasmons is demonstrated analytically. It is shown that in a metal-insulator-metal (MIM) waveguide, surface plasmon polaritons (SPPs) excited by an electron moving at a speed higher than the phase velocity of SPPs can generate Cherenkov radiation, which can be switched from forward to reverse direction by tuning the core thickness of the waveguide. Calculations are performed in both frequency and time domains, demonstrating that a radiation pattern with a backward-pointing radiation cone can be achieved at small waveguide core widths, with energy flow opposite to the wave vector of SPPs. Our study suggests the feasibility of generating and steering electron radiation in simple plasmonic systems, opening the gate for various applications such as velocity-selective particle detections.
ISSN: 2045-2322
DOI: 10.1038/srep30704
Rights: © 2016 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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