Design and Non-Uniform Current Analysis of a 0.35-THz Extended Interaction Oscillator Based on Pseudospark-Sourced Multiple Sheet Electron Beams
A novel method, which combines a multiple-beam extended interaction oscillator (EIO) with pseudospark-sourced (PS) sheet electron beams, is applied to generate high-power terahertz sources. For a multiple-beam EIO, the beam cross-section is significantly improved by replacing the commonly used penci...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/7/1519 |
| _version_ | 1797608122140852224 |
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| author | Ruibin Peng Hailong Li Yong Yin Bin Wang Xiaotao Xu Liangjie Bi Yu Qin Lin Meng |
| author_facet | Ruibin Peng Hailong Li Yong Yin Bin Wang Xiaotao Xu Liangjie Bi Yu Qin Lin Meng |
| author_sort | Ruibin Peng |
| collection | DOAJ |
| description | A novel method, which combines a multiple-beam extended interaction oscillator (EIO) with pseudospark-sourced (PS) sheet electron beams, is applied to generate high-power terahertz sources. For a multiple-beam EIO, the beam cross-section is significantly improved by replacing the commonly used pencil electron beams with sheet electron beams. The PS electron beams have the advantage of high current density and operate without a focus magnetic field. The volume of the cavity is larger when the EIO operates in the TM<sub>31</sub>-3π mode than in the conventional TM<sub>01</sub>-2π mode at the same operating frequency. The EIO operating at the terahertz frequency has a larger cavity volume, which means greater power capacity and lower manufacturing difficulty. For a PS multiple-beam EIO, the non-uniformity of electron beam currents is a common problem. In order to study this problem, an original high-order mode EIO driven by PS multiple sheet electron beams is presented with enhanced output power at 0.35 THz. The authors analyze electron beams with different currents through particle-in-cell (PIC) simulations. Simulation results show that the EIO can operate stably even in the case of non-uniform PS electron beam currents. When each current is 1.4 A, simulation results show the EIO’s output power of 4.9 kW at 0.35 THz. Considering the low conductivity of 1.1 × 10<sup>7</sup> S/m, the efficiency is still 1.42%. |
| first_indexed | 2024-03-11T05:40:11Z |
| format | Article |
| id | doaj.art-c05723d4cde4437bb9e8bfc4113ddf68 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-11T05:40:11Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-c05723d4cde4437bb9e8bfc4113ddf682023-11-17T16:31:45ZengMDPI AGElectronics2079-92922023-03-01127151910.3390/electronics12071519Design and Non-Uniform Current Analysis of a 0.35-THz Extended Interaction Oscillator Based on Pseudospark-Sourced Multiple Sheet Electron BeamsRuibin Peng0Hailong Li1Yong Yin2Bin Wang3Xiaotao Xu4Liangjie Bi5Yu Qin6Lin Meng7The Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaA novel method, which combines a multiple-beam extended interaction oscillator (EIO) with pseudospark-sourced (PS) sheet electron beams, is applied to generate high-power terahertz sources. For a multiple-beam EIO, the beam cross-section is significantly improved by replacing the commonly used pencil electron beams with sheet electron beams. The PS electron beams have the advantage of high current density and operate without a focus magnetic field. The volume of the cavity is larger when the EIO operates in the TM<sub>31</sub>-3π mode than in the conventional TM<sub>01</sub>-2π mode at the same operating frequency. The EIO operating at the terahertz frequency has a larger cavity volume, which means greater power capacity and lower manufacturing difficulty. For a PS multiple-beam EIO, the non-uniformity of electron beam currents is a common problem. In order to study this problem, an original high-order mode EIO driven by PS multiple sheet electron beams is presented with enhanced output power at 0.35 THz. The authors analyze electron beams with different currents through particle-in-cell (PIC) simulations. Simulation results show that the EIO can operate stably even in the case of non-uniform PS electron beam currents. When each current is 1.4 A, simulation results show the EIO’s output power of 4.9 kW at 0.35 THz. Considering the low conductivity of 1.1 × 10<sup>7</sup> S/m, the efficiency is still 1.42%.https://www.mdpi.com/2079-9292/12/7/1519extended interaction oscillator (EIO)multiple sheet beamsnon-uniformity of electron beam currentspseudospark-sourced (PS) electron beamTM<sub>31</sub>-3π modeterahertz sources |
| spellingShingle | Ruibin Peng Hailong Li Yong Yin Bin Wang Xiaotao Xu Liangjie Bi Yu Qin Lin Meng Design and Non-Uniform Current Analysis of a 0.35-THz Extended Interaction Oscillator Based on Pseudospark-Sourced Multiple Sheet Electron Beams Electronics extended interaction oscillator (EIO) multiple sheet beams non-uniformity of electron beam currents pseudospark-sourced (PS) electron beam TM<sub>31</sub>-3π mode terahertz sources |
| title | Design and Non-Uniform Current Analysis of a 0.35-THz Extended Interaction Oscillator Based on Pseudospark-Sourced Multiple Sheet Electron Beams |
| title_full | Design and Non-Uniform Current Analysis of a 0.35-THz Extended Interaction Oscillator Based on Pseudospark-Sourced Multiple Sheet Electron Beams |
| title_fullStr | Design and Non-Uniform Current Analysis of a 0.35-THz Extended Interaction Oscillator Based on Pseudospark-Sourced Multiple Sheet Electron Beams |
| title_full_unstemmed | Design and Non-Uniform Current Analysis of a 0.35-THz Extended Interaction Oscillator Based on Pseudospark-Sourced Multiple Sheet Electron Beams |
| title_short | Design and Non-Uniform Current Analysis of a 0.35-THz Extended Interaction Oscillator Based on Pseudospark-Sourced Multiple Sheet Electron Beams |
| title_sort | design and non uniform current analysis of a 0 35 thz extended interaction oscillator based on pseudospark sourced multiple sheet electron beams |
| topic | extended interaction oscillator (EIO) multiple sheet beams non-uniformity of electron beam currents pseudospark-sourced (PS) electron beam TM<sub>31</sub>-3π mode terahertz sources |
| url | https://www.mdpi.com/2079-9292/12/7/1519 |
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