Pulsed terahertz attenuated total reflection spectroscopy.

Pulsed terahertz attenuated total reflection (ATR) spectra of solid materials and liquids covering the 10 cm(-1) to 120 cm(-1) (0.3 THz to 3.6 THz) region of the electromagnetic spectrum are recorded using a terahertz pulsed spectrometer and silicon ATR modules. Pulsed terahertz ATR measurements are completed nondestructively using small amounts of sample (typically 1 mg for solids) and no sample preparation. Many terahertz analyses can be run in rapid sequence, minimizing the analysis time.