Introduction BT - Field-effect Self-mixing Terahertz Detectors

Abstract

In this chapter, the basic characteristics of terahertz electromagnetic wave and terahertz applications are briefly introduced. Challenges in general, to develop solid-state terahertz devices including emitters and detectors are discussed by comparing the existing principles and actual devices. The focus of this thesis is then refined to the understanding of the self-mixing mechanism and the development of practical detectors based on field-effect transistors or those alike. The outline of this thesis is given at the end of this chapter.