LongWave Photonics LLC is developing terahertz imaging systems and high powered terahertz sources based on Quantum Cascade Laser (QCL) technology. LongWave Photonics' QCL systems deliver milliwatt average power levels over a range frequencies from 1.5 to 5 THz in a compact, cryogen free package. These high average power levels allow real-time imaging, spectroscopy and tomography for research and industrial applications. The firm's products are available to industrial, academic and government researchers without the need for specialized cryogenic or vacuum systems. LongWave Photonics has developed easy to use systems and provides "turn-key" solutions to its users. LongWave Photonics' QCL systems deliver milliwatt average power levels over a range frequencies from 1.9 to 5 THz in compact, cryogen free packages. These high average power levels allow real-time imaging, spectroscopy and tomography for research and industrial applications.