TY - GEN
T1 - Terahertz Emission in an Asymmetric Dual-Grating-Gate High-Electron Mobility Transistor Plasmonic Photomixer under dc Current Flow
AU - Hosotan, Tomotaka
AU - Satou, Akira
AU - Otsuji, Taiichi
N1 - Funding Information:
This work was financially supported by JSPS-KAKENHI No. 18J21073, No. 18H053311, and No. 20K20349, Japan. The authors thank NTT-AT Corp. for cooperation in processing the sample fabrication. The partial device process and SEM observation were done at the Laboratory for Nanoelectronics and Spintronics, RIEC, Tohoku University, Japan.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/8
Y1 - 2020/11/8
N2 - We report on terahertz (THz) emission from a current-driven asymmetric dual-grating-gate high-electron-mobility transistor (ADGG-HEMT) excited by photomixed dual-CW-infrared laser irradiation whose difference frequency (\delta f) was set around the THz plasmon-mode frequencies of the 2D electrons in the channel. The radiation spectra observed at 100 K showed two distinctive emission components beyond the black-body radiation, one promoted by \delta f independent thermally excited incoherent plasmons and the other promoted by \delta f dependent coherent plasmons. The results suggest the occurrence of the plasmonic instability stimulated by the dc current flow in the channel.
AB - We report on terahertz (THz) emission from a current-driven asymmetric dual-grating-gate high-electron-mobility transistor (ADGG-HEMT) excited by photomixed dual-CW-infrared laser irradiation whose difference frequency (\delta f) was set around the THz plasmon-mode frequencies of the 2D electrons in the channel. The radiation spectra observed at 100 K showed two distinctive emission components beyond the black-body radiation, one promoted by \delta f independent thermally excited incoherent plasmons and the other promoted by \delta f dependent coherent plasmons. The results suggest the occurrence of the plasmonic instability stimulated by the dc current flow in the channel.
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U2 - 10.1109/IRMMW-THz46771.2020.9370536
DO - 10.1109/IRMMW-THz46771.2020.9370536
M3 - Conference contribution
AN - SCOPUS:85103154016
T3 - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
SP - 777
EP - 778
BT - 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020
PB - IEEE Computer Society
T2 - 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020
Y2 - 8 November 2020 through 13 November 2020
ER -