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Recent Developments of an Opto-Electronic THz Spectrometer for High-Resolution Spectroscopy
Université Lille Nord de France, F-59000 Lille, France
ULCO, LPCA, 189A Av. Maurice Schumann, F-59140 Dunkerque, France
CNRS, UMR 8101, F-59140 Dunkerque, France
IEMN, Avenue Poincaré, BP 60069, F-59652 Villeneuve d'Ascq cedex, France
CNRS, UMR 8520, F-59652 Villeneuve d'Ascq, France
* Author to whom correspondence should be addressed.
Received: 21 September 2009; in revised form: 13 October 2009 / Accepted: 29 October 2009 / Published: 13 November 2009
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.
Keywords: THz; photomixing; high-resolution spectroscopy; gas phase
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MDPI and ACS Style
Hindle, F.; Yang, C.; Mouret, G.; Cuisset, A.; Bocquet, R.; Lampin, J.-F.; Blary, K.; Peytavit, E.; Akalin, T.; Ducournau, G. Recent Developments of an Opto-Electronic THz Spectrometer for High-Resolution Spectroscopy. Sensors 2009, 9, 9039-9057.
Hindle F, Yang C, Mouret G, Cuisset A, Bocquet R, Lampin J-F, Blary K, Peytavit E, Akalin T, Ducournau G. Recent Developments of an Opto-Electronic THz Spectrometer for High-Resolution Spectroscopy. Sensors. 2009; 9(11):9039-9057.
Hindle, Francis; Yang, Chun; Mouret, Gael; Cuisset, Arnaud; Bocquet, Robin; Lampin, Jean-François; Blary, Karine; Peytavit, Emilien; Akalin, Tahsin; Ducournau, Guillaume. 2009. "Recent Developments of an Opto-Electronic THz Spectrometer for High-Resolution Spectroscopy." Sensors 9, no. 11: 9039-9057.