TERAHERTZ SPECTROSCOPY: High-resolution terahertz spectrometer sniffs out chemicals

Tunable absorption spectrometers using terahertz sources and detectors can detect chemical signatures from 0.1 to 1.1 THz with line widths and repeatability at the megahertz level. When used in industrial process control and monitoring, they can improve detection and identification of chemicals. ALEXANDER MAJEWSKI of Goodrich ISR Systems (Danbury, CT)

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