Concept of a tunable source of coherent THz radiation driven by a plasma modulated electron beam
We have carried out numerical studies which consider the modulation of a picosecond long relativistic electron beam in a plasma channel and the generation of a micro-bunched train. The subsequent propagation of the micro-bunched beam in the vacuum area was also investigated. The same numerical model...
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| Format: | Journal article |
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AIP Publishing
2018
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| _version_ | 1797071424861503488 |
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| author | Zhang, H Konoplev, I Doucas, G Smith, J |
| author_facet | Zhang, H Konoplev, I Doucas, G Smith, J |
| author_sort | Zhang, H |
| collection | OXFORD |
| description | We have carried out numerical studies which consider the modulation of a picosecond long relativistic electron beam in a plasma channel and the generation of a micro-bunched train. The subsequent propagation of the micro-bunched beam in the vacuum area was also investigated. The same numerical model was then used to simulate the radiation arising from the interaction of the micro-bunched beam with a metallic grating. The dependence of the radiation spectrum on the parameters of the micro-bunched beam has been studied and the tunability of the radiation by the variation of the micro-bunch spacing has been demonstrated. The micro-bunch spacing can be changed easily by altering the plasma density without changing the beam energy or current. Using the results of these studies, we develop a conceptual design of a tunable source of coherent terahertz (THz) radiation driven by a plasma modulated beam. Such a source would be a potential and useful alternative to conventional vacuum THz tubes and THz free-electron laser sources. |
| first_indexed | 2024-03-06T22:53:02Z |
| format | Journal article |
| id | oxford-uuid:5f6f4a51-1eb5-47df-85fc-e7f7f05cc4c8 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:53:02Z |
| publishDate | 2018 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | oxford-uuid:5f6f4a51-1eb5-47df-85fc-e7f7f05cc4c82022-03-26T17:46:54ZConcept of a tunable source of coherent THz radiation driven by a plasma modulated electron beamJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5f6f4a51-1eb5-47df-85fc-e7f7f05cc4c8Symplectic Elements at OxfordAIP Publishing2018Zhang, HKonoplev, IDoucas, GSmith, JWe have carried out numerical studies which consider the modulation of a picosecond long relativistic electron beam in a plasma channel and the generation of a micro-bunched train. The subsequent propagation of the micro-bunched beam in the vacuum area was also investigated. The same numerical model was then used to simulate the radiation arising from the interaction of the micro-bunched beam with a metallic grating. The dependence of the radiation spectrum on the parameters of the micro-bunched beam has been studied and the tunability of the radiation by the variation of the micro-bunch spacing has been demonstrated. The micro-bunch spacing can be changed easily by altering the plasma density without changing the beam energy or current. Using the results of these studies, we develop a conceptual design of a tunable source of coherent terahertz (THz) radiation driven by a plasma modulated beam. Such a source would be a potential and useful alternative to conventional vacuum THz tubes and THz free-electron laser sources. |
| spellingShingle | Zhang, H Konoplev, I Doucas, G Smith, J Concept of a tunable source of coherent THz radiation driven by a plasma modulated electron beam |
| title | Concept of a tunable source of coherent THz radiation driven by a plasma modulated electron beam |
| title_full | Concept of a tunable source of coherent THz radiation driven by a plasma modulated electron beam |
| title_fullStr | Concept of a tunable source of coherent THz radiation driven by a plasma modulated electron beam |
| title_full_unstemmed | Concept of a tunable source of coherent THz radiation driven by a plasma modulated electron beam |
| title_short | Concept of a tunable source of coherent THz radiation driven by a plasma modulated electron beam |
| title_sort | concept of a tunable source of coherent thz radiation driven by a plasma modulated electron beam |
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