Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/147861
Title: Directing Cherenkov photons with spatial nonlocality
Authors: Hu, Hao
Gao, Dongliang
Lin, Xiao
Hou, Songyan
Zhang, Baile
Wang, Qi Jie
Luo, Yu
Keywords: Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Issue Date: 2020
Source: Hu, H., Gao, D., Lin, X., Hou, S., Zhang, B., Wang, Q. J. & Luo, Y. (2020). Directing Cherenkov photons with spatial nonlocality. Nanophotonics, 9(10), 3435-3442. https://dx.doi.org/10.1515/nanoph-2020-0135
Project: MOE2018-T2-2-189 (S)
MOE2017-T1-001-239 (RG91/17 (S))
A18A7b0058
MOE2016-T2-2-159
MOE2018-T2-1-176
11504252
Journal: Nanophotonics
Abstract: Cherenkov radiation in natural transparent materials is generally forward-propagating, owing to the positive group index of radiation modes. While negative-index metamaterials enable reversed Cherenkov radiation, the forward photon emission from a swift charged particle is prohibited. In this work, we theoretically investigate emission behaviours of a swift charged particle in the nanometallic layered structure. Our results show that Cherenkov photons are significantly enhanced by longitudinal plasmon modes resulting from the spatial nonlocality in metamaterials. More importantly, longitudinal Cherenkov photons can be directed either forward or backward, stringently depending on the particle velocity. The enhanced flexibility to route Cherenkov photons holds promise for many practical applications of Cherenkov radiation, such as novel free-electron radiation sources and new types of Cherenkov detectors.
URI: https://hdl.handle.net/10356/147861
ISSN: 2192-8606
DOI: 10.1515/nanoph-2020-0135
Rights: © 2020 Hao Hu et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution 4.0 International License.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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