Field-effect Self-mixing Terahertz Detectors

A comprehensive device model considering both spatialdistributions of the terahertz field and the field-effect self-mixing factorhas been constructed for the first time in the thesis. The author has foundthat it is the strongly localized terahertz field induced in a small fractionof the gated electron channel that plays an important role in the highresponsivity. An AlGaN/GaN-based high-electron-mo...