A turn-key, broadly tunable, THz source is proposed here. This source utilizes DEOS's high-reliability THz space laser technology combined with an ultra-high frequency Scotch diode and millimeter-wave source, to yield a reliable, tunable, THz source. The applications for such a source are numerous and include: characterization of semiconductor materials and devices, characterization of composites, characterization of plastics, monitoring of plastics curing, remote sensing, and trace chemical detection. The development of this technology will complement DEOS's existing THz laser products, placing DEOS in a unique competitive position.Commercial Applications:Characterization of semiconductors and semiconductor DevicesCharacterization of composisteCharacterization of plasticsMonitoring of plastics curingRemote sensingTrace chemical detection