[TuB1] Terahertz Devices

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[TuB1-04] Design and Fabrication of THz Resonator-Semiconductor Superlattice Coupled Systems

〇Nagi Maeda¹, Hideki Miyazaki², Takaaki Mano², Naomi Nagai¹, Kazuyuki Kuroyama¹, Kazuhiko Hirakawa¹ (1. Inst. of Indus. Sci., the Univ. of Tokyo (Japan), 2. National Inst. for Materials Sci. (Japan))

More than 50 years have passed since Esaki and Tsu proposed the semiconductor Bloch oscillator, yet it has still not been realized. Modulation of electrical transport by photon-assisted tunneling (PAT) induced by terahertz (THz) illumination in semiconductor superlattices was suggested as a possible route to suppress high-field domains, which constitute the major obstacle to realizing Bloch oscillators. However, to date, no study has reported an appropriate integration of a semiconductor superlattice with a suitable THz resonator. In this work, we investigated an approach to couple a GaAs/Al_0.4Ga_0.6As superlattice to a metal–insulator–metal (MIM) resonator employing Au as the metal and polyimide as the insulator.