Method and System for Plasma-Induced-Terahertz Spectoscopy

Since terahertz (THz) wave spectroscopy has been utilized to detect a number of chemical and explosive materials and related compounds by providing their spectral signatures in the THz frequency range, there is an interest in THz wve spectroscopy as a technique to sense improvised explosive devices. However, due to the severe water vapor attenuation of THz waves in the atmosphere, the reliable sensing range of THz wave spectroscopy has been limited to relatively short distances.