Terahertz technology

the 300–3000 GHz range of the electromagnetic spectrum

type of laser

form of diode

thumb|High-power 140 GHz gyrotron for plasma heating in the Wendelstein 7-X fusion experiment, Germany. A gyrotron is a class of high-power linear-beam vacuum tubes that generates millimeter-wave electromagnetic waves by the cyclotron resonance of electrons in a strong magnetic field. Output frequencies range from about 20 to 527 GHz, covering wavelengths from microwave to the edge of the terahertz gap. Typical output powers range from tens of kilowatts to 1–2 megawatts. Gyrotrons can be designed for pulsed or continuous operation. The gyrotron was invented by Soviet scientists at NIRFI, based

field-effect transistor incorporating a heterojunction as the channel

chemical compound

optical instrument

vacuum tube used to generate microwaves

type of bipolar junction transistor (BJT) which uses differing semiconductor materials for the emitter and base regions, creating a heterojunction

diode with a resonant-tunneling structure

Effect in semiconductor physics

semiconductor material

analytic technique