Author： Hindle Francis Yang Chun Mouret Gael Cuisset Arnaud Bocquet Robin Lampin Jean-François Blary Karine Peytavit Emilien Akalin Tahsin Ducournau Guillaume
Publisher： MDPI
E-ISSN： 1424-8220|9|11|9039-9057
ISSN： 1424-8220
Source： Sensors, Vol.9, Iss.11, 2009-11, pp. : 9039-9057
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Abstract
A review is provided of sources and detectors that can be employed in the THz range before the description of an opto-electronic source of monochromatic THz radiation. The realized spectrometer has been applied to gas phase spectroscopy. Air-broadening coefficients of HCN are determined and the insensitivity of this technique to aerosols is demonstrated by the analysis of cigarette smoke. A multiple pass sample cell has been used to obtain a sensitivity improvement allowing transitions of the volatile organic compounds to be observed. A solution to the frequency metrology is presented and promises to yield accurate molecular line center measurements.
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