AlGaN/GaN Heterostructure Transistors for the Generation and Detection of THz Radiation

he AlGaN/GaN heterostructure is an excellent candidate for the realization of sub-millimeter wave power amplifiers, which can serve as integrated power source for THz frequency multipliers. Here we discuss the operation of AlGaN/GaN transistors as THz detector, which provides information on the behavior of the electron system at THz frequencies.