{"title":"THz Emission in a Dual-Grating-Gate HEMT Promoted by the Plasmonic Boom Instability","authors":"T. Hosotani, A. Satou, T. Otsuji","doi":"10.1109/IRMMW-THz50926.2021.9567205","DOIUrl":null,"url":null,"abstract":"We experimentally observed photomixed THz emission from a dual-grating-gate high-electron-mobility transistor under different bias conditions at 120 K with irradiating photomixed dual-CW-IR laser beams. The observed emission spectral peak frequencies meet well to the theoretical calculations for plasmon mode frequencies, suggesting the photomixed THz emission is amplified by the DC-current-driven plasmonic boom type instability when the electron drift velocity exceeds the plasmon velocity at the plasmon cavity boundary.","PeriodicalId":6852,"journal":{"name":"2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)","volume":"21 1","pages":"1-2"},"PeriodicalIF":0.0000,"publicationDate":"2021-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IRMMW-THz50926.2021.9567205","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
We experimentally observed photomixed THz emission from a dual-grating-gate high-electron-mobility transistor under different bias conditions at 120 K with irradiating photomixed dual-CW-IR laser beams. The observed emission spectral peak frequencies meet well to the theoretical calculations for plasmon mode frequencies, suggesting the photomixed THz emission is amplified by the DC-current-driven plasmonic boom type instability when the electron drift velocity exceeds the plasmon velocity at the plasmon cavity boundary.
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