2022 International Conference on Solid State Devices and Materials
Sep 26 - Dec 23, 2022Makuhari Messe
2022 International Conference on Solid State Devices and Materials
Sep 26 - Dec 23, 2022Makuhari Messe
[A-6-06]Optical-to-MMW/THz Carrier Frequency Down-Conversion by UTC-PD-Integrated HEMT: the Scaling Rule of Conversion Gain on UTC-PD Mesa Size
〇Dai Nakajima1, Kazuki Nishimura1, Tomotaka Hosotani1, Keisuke Kasai1, Masato Yoshida1, Tetsuya Suemitsu2, Taichi Otsuji1, Akira Satou1(1. Research Institute of Electrical Communication, Tohoku University (Japan), 2. New Industry Creation Hatchery Center, Tohoku University (Japan))
Presentation style: On-site (in-person)
We experimentally investigate the scaling rule of the conversion gain on unitraveling-carrier-photodiode (UTC-PD) mesa size of the UTC-PD-integrated HEMT for optical to millimeter-wave (MMW)/terahertz (THz) frequency down-conversion. We showed that the conversion gain monotonically increases as the mesa size is reduced, due to the suppression of the in-plane diffusion of photogenerated electrons in the absorption layer.