CW terahertz source techniques for space systems

Abstract

Many terahertz systems have been put forward and some of them even find space application. Continuous-wave (CW) terahertz sources will play an important role in space systems. Many CW terahertz techniques have been realized in laboratory and even employed. Those proper must be pre elected for space systems with strict limitation. Some space terahertz applications are introduced and CW terahertz sources compared. Among them prospective source technology for space are stressed.

Terahertz SIS detectors for space applications

“…The most prominent application of terahertz is submillimeter wave radio astronomy [8]. Spectrum of many interstellar molecules are located at terahertz band, some of examples are listed in Table I.…”

“…Upconversion is typically achieved using a chain of GaAs Schottky diode multipliers after a Gunn or impact ionization avalanche transit-time (IMPATT) diode. QCL technology is another promising way in space terahertz systems [8]. The digital signal processor is employed to sample the IF signal and analyze the power spectrum.…”