Researcher

Group Web Site

https://www.otsuji.riec.tohoku.ac.jp/english/index_en.php

Research Activities

Terahertz (sub-millimeter) coherent electromagnetic waves are expected to explore the potential application fields of future information and communications technologies. We are developing novel, ultra-broadband integrated signal-processing devices/systems operating in the millimeter and terahertz frequency regime.

Ultra-broadband Device Physics (Assoc. Prof. Satou)

Research topics

• Physics of Devices Based on Graphene and 2D Atomically Thin Layered Heterojunctions and their Applications to Novel Terahertz Photonic Devices
• Photonics-Electronics Convergence Carrier Converters

For creation of millimeter-wave/terahertz devices based on new materials and/or new operation principles, we are theoretically and experimentally investigating physics in the devices such as electron-transport phenomena and optoelectronic properties. Furthermore, we are conducting research and development of the devices for their applications to future ultra-fast wireless communications and photonics-electronics convergence networks.

Ultra-broadband Quantum Electronics (Assoc. Prof. Lin)

Research topics

• Research on hetero/quantum structures of compound semiconductors and two-dimensional thin films and their terahertz applications.
• Research on optoelectronic devices and their communication applications in high-capacity wireless networks.
• Research on physical properties of hetero/quantum structures in quantum cascade lasers and their mid-infrared to terahertz applications.

We are creating semiconductor optoelectronic devices in the millimeter-wave and terahertz regions, theoretically and experimentally study on electronic transport and optoelectronic properties at novel materials and hetero/quantum structures. Research and development of high-intensity terahertz sources, high-efficiency photoelectric convertor and detector for future ultra-broadband wireless communication systems.

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