Determining DHO detection limits for a frequency domain THz spectrometer coupled to a light-weight multi-pass sample cell

Abstract

A fringe-free, frequency domain terahertz spectrometer connected to a custom fabricated, light-weight multi-meter multi-pass sample cell was employed to measure the 1.492 THz, 1.507 THz and 1.523 THz molecular transitions of DHO over various pressures. We will report on the detectable concentrations of the DHO achieved with the portable instrument.