Broadband enhancement of cherenkov radiation using dispersionless plasmons
As one of leading technologies in detecting relativistic particles, Cherenkov radiation plays an essential role in modern high-energy and particle physics. However, the limited photon yield in transparent dielectrics makes efficient Cherenkov radiation only possible with high-energy particles (at le...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/165221 |
| _version_ | 1811683498008772608 |
|---|---|
| author | Hu, Hao Lin, Xiao Liu, Dongjue Chen, Hongsheng Zhang, Baile Luo, Yu |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Hu, Hao Lin, Xiao Liu, Dongjue Chen, Hongsheng Zhang, Baile Luo, Yu |
| author_sort | Hu, Hao |
| collection | NTU |
| description | As one of leading technologies in detecting relativistic particles, Cherenkov radiation plays an essential role in modern high-energy and particle physics. However, the limited photon yield in transparent dielectrics makes efficient Cherenkov radiation only possible with high-energy particles (at least several MeV). This restriction hinders applications of Cherenkov radiation in free-electron light source, bio-imaging, medical therapy, etc. Broadband enhancement of Cherenkov radiation is highly desired for all these applications, but still widely acknowledged as a scientific challenge. To this end, we report a general approach to enhance the photon yield of Cherenkov radiation using dispersionless plasmons. Broadband dispersionless plasmons can be realized by exploiting either the acoustic nature of terahertz plasmons in a graphene-based heterostructure or the nonlocal property of optical plasmons in a metallodielectric structure. When coupled to moving electrons, such dispersionless plasmons give rise to a radiation enhancement rate more than two orders of magnitude (as compared with conventional Cherenkov radiation) over an ultrabroad frequency band. Moreover, since the phase velocity of dispersionless plasmons can be made as small as the Fermi velocity, giant radiation enhancements can be readily induced by ultralow-energy free electrons (e.g. with a kinetic energy down to 3 electronvolts), without resorting to relativistic particles. |
| first_indexed | 2024-10-01T04:13:41Z |
| format | Journal Article |
| id | ntu-10356/165221 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:13:41Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1652212024-07-10T05:36:07Z Broadband enhancement of cherenkov radiation using dispersionless plasmons Hu, Hao Lin, Xiao Liu, Dongjue Chen, Hongsheng Zhang, Baile Luo, Yu School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) Nanophotonics Free Electron Radiation Graphene Plasmons As one of leading technologies in detecting relativistic particles, Cherenkov radiation plays an essential role in modern high-energy and particle physics. However, the limited photon yield in transparent dielectrics makes efficient Cherenkov radiation only possible with high-energy particles (at least several MeV). This restriction hinders applications of Cherenkov radiation in free-electron light source, bio-imaging, medical therapy, etc. Broadband enhancement of Cherenkov radiation is highly desired for all these applications, but still widely acknowledged as a scientific challenge. To this end, we report a general approach to enhance the photon yield of Cherenkov radiation using dispersionless plasmons. Broadband dispersionless plasmons can be realized by exploiting either the acoustic nature of terahertz plasmons in a graphene-based heterostructure or the nonlocal property of optical plasmons in a metallodielectric structure. When coupled to moving electrons, such dispersionless plasmons give rise to a radiation enhancement rate more than two orders of magnitude (as compared with conventional Cherenkov radiation) over an ultrabroad frequency band. Moreover, since the phase velocity of dispersionless plasmons can be made as small as the Fermi velocity, giant radiation enhancements can be readily induced by ultralow-energy free electrons (e.g. with a kinetic energy down to 3 electronvolts), without resorting to relativistic particles. Ministry of Education (MOE) National Research Foundation (NRF) Published version The work at Zhejiang University was sponsored in part by the National Natural Science Foundation of China (NNSFC) (Nos. 61625502, 11961141010, 61975176, and 62175212), the Top-Notch Young Talents Program of China, the National Natural Science Fund for Excellent Young Scientists Fund Program (Overseas) of China, Zhejiang University Global Partnership Fund, and the Fundamental Research Funds for the Central Universities (No. 2021FZZX001- 19). The work at Nanyang Technological University was sponsored in part by Singapore Ministry of Education (Nos. MOE2018-T2-2-189 (S), MOE2018-T2-1-022 (S), and MOE2016-T3-1-006), A*Star Advanced Manufacturing and Engineering Individual Research Grant (No. A20E5c0095) and Programmatic Funds (No. A18A7b0058), National Research Foundation Singapore Competitive Research Program (Nos. NRF-CRP22-2019- 0006 and NRF-CRP23-2019-0007). 2023-03-24T14:01:42Z 2023-03-24T14:01:42Z 2022 Journal Article Hu, H., Lin, X., Liu, D., Chen, H., Zhang, B. & Luo, Y. (2022). Broadband enhancement of cherenkov radiation using dispersionless plasmons. Advanced Science, 9(26), e2200538-. 2198-3844 https://hdl.handle.net/10356/165221 26 9 e2200538 en MOE 2018-T2-2-189 (S) MOE2018-T2-1-022 (S) MOE2016-T3-1-006 A20E5c0095 A18A7b0058 NRF-CRP22-2019- 0006 NRF-CRP23-2019-0007 Advanced Science 10.21979/N9/KTP1QL © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. application/pdf |
| spellingShingle | Nanophotonics Free Electron Radiation Graphene Plasmons Hu, Hao Lin, Xiao Liu, Dongjue Chen, Hongsheng Zhang, Baile Luo, Yu Broadband enhancement of cherenkov radiation using dispersionless plasmons |
| title | Broadband enhancement of cherenkov radiation using dispersionless plasmons |
| title_full | Broadband enhancement of cherenkov radiation using dispersionless plasmons |
| title_fullStr | Broadband enhancement of cherenkov radiation using dispersionless plasmons |
| title_full_unstemmed | Broadband enhancement of cherenkov radiation using dispersionless plasmons |
| title_short | Broadband enhancement of cherenkov radiation using dispersionless plasmons |
| title_sort | broadband enhancement of cherenkov radiation using dispersionless plasmons |
| topic | Nanophotonics Free Electron Radiation Graphene Plasmons |
| url | https://hdl.handle.net/10356/165221 |
| work_keys_str_mv | AT huhao broadbandenhancementofcherenkovradiationusingdispersionlessplasmons AT linxiao broadbandenhancementofcherenkovradiationusingdispersionlessplasmons AT liudongjue broadbandenhancementofcherenkovradiationusingdispersionlessplasmons AT chenhongsheng broadbandenhancementofcherenkovradiationusingdispersionlessplasmons AT zhangbaile broadbandenhancementofcherenkovradiationusingdispersionlessplasmons AT luoyu broadbandenhancementofcherenkovradiationusingdispersionlessplasmons |