| Presentation | 2022-12-20 [Invited Talk] Directional terahertz radiation based on the interaction of electron beams with metamaterials Tatsunosuke Matsui, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is known as a Smith?Purcell Effect from 1950’s that the electromagnetic (EM) radiation can be obtained when accelerated electron-beam run over the surface of a metallic grating. Since Urata et al. reported in 1998 that the superradiance, in which the magnitude of the EM radiation could be nonlinearly increased by using a large current from the electron gun of the scanning electron microscope, researches on the Smith?Purcell radiation and superradiance have been actively carried out. In recent years, many researches have been conducted on the EM wave radiation utilizing the interaction between electron-beam and metamaterials, and it has been reported that quasi-monochromatic directional terahertz (THz) EM radiation can be obtained not relying on a large current input. In this report, we discuss on the highly directional THz radiation from graded gratings with gradually varied groove depth or groove spacing, and the special Smith?Purcell radiation from the periodic grating with extremely narrowed groove widths. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Terahertz / Smith-Purcell Effect / Electron Beam / Metamaterial / Graded Grating / PIC-FDTD Method |
| Paper # | ED2022-81,MWPTHz2022-52 |
| Date of Issue | 2022-12-12 (ED, MWPTHz) |
| Conference Information | |
| Committee | ED / MWPTHz |
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| Conference Date | 2022/12/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroki Fujishiro(Tokyo Univ. of Science) / Atsushi Kanno(NICT) |
| Vice Chair | Seiya Sakai(Hokkaido Univ.) / Masayuki Fujita(Osaka Univ.) / Kensuke Ikeda(CRIEPI) |
| Secretary | Seiya Sakai(Saga Univ.) / Masayuki Fujita(NTT) / Kensuke Ikeda(NICT) |
| Assistant | Masatoshi Koyama(Osaka Inst. of Tech.) / Yoshitugu Yamamoto(Mitsubishi Electric) / Li Yi(Osaka Univ.) / Akira Satou(Tohoku Univ.) / Safumi Suzuki(Tokyo Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Electron Devices / Technical Committee on Microwave Photonics and Terahertz Photonic-Electronic Technologies |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Talk] Directional terahertz radiation based on the interaction of electron beams with metamaterials |
| Sub Title (in English) | |
| Keyword(1) | Terahertz |
| Keyword(2) | Smith-Purcell Effect |
| Keyword(3) | Electron Beam |
| Keyword(4) | Metamaterial |
| Keyword(5) | Graded Grating |
| Keyword(6) | PIC-FDTD Method |
| 1st Author's Name | Tatsunosuke Matsui |
| 1st Author's Affiliation | Mie University(Mie Univ.) |
| Date | 2022-12-20 |
| Paper # | ED2022-81,MWPTHz2022-52 |
| Volume (vol) | vol.122 |
| Number (no) | ED-319,MWPTHz-320 |
| Page | pp.pp.46-51(ED), pp.46-51(MWPTHz), |
| #Pages | 6 |
| Date of Issue | 2022-12-12 (ED, MWPTHz) |