Abstract
Terahertz sensing technology has a promise of many breakthrough and enabling applications including detection of biological and chemical hazardous agents, cancer detection, detection of mines and explosives, enhancement of people, building, and airport security, covert communications (in THz and sub-THz windows), and applications in radioastronomy and space research. This tutorial will review the famous THz gap and the-state-of-the-art of existing THz sources, detectors, and sensing systems. After completing this course you should be able to develop an understanding of: THz sensing of biological material; Broadband THz reflection and transmission detection of concealed objects; THz explosive identification; THz nanocomposite spectroscopy; THz remote sensing.

Educational Course Subject Areas
Sensors

Keywords
Terahertz Electronics ,  Photonics ,  Explosive detection ,  Plasma wave electronics ,  Terahertz radiation ,  NEP ,  Plasma waves ,  Quantum cascade laser ,  Carcinotron ,  Back Wave Oscillator ,  HEMT (High Electron Mobility Transistor) ,  HFET ,  MODFET ,  TEGFET ,  Gunn diode ,  B