title: Recent Developments of an Opto-Electronic THz Spectrometer for High-Resolution Spectroscopy.
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.
authors.affiliation: Université Lille Nord de France, F-59000 Lille, France; E-Mails:  jean-francois.lampin@isen.iemn.univ-lille1.fr  (J.F.L.);  Karine.Blary@IEMN.Univ-Lille1.fr  (K.B.);  emilien.peytavit@iemn.univ-lille1.fr  (E.P.);  Tahsin.Akalin@IEMN.Univ-Lille1.fr  (T.A.);  Guillaume.Ducournau@iemn.univ-lille1.fr  (G.D.).
authors.forename: Francis
authors.initials: F
authors.lastname: Hindle
authors.forename: Chun
authors.initials: C
authors.lastname: Yang
authors.forename: Gael
authors.initials: G
authors.lastname: Mouret
authors.forename: Arnaud
authors.initials: A
authors.lastname: Cuisset
authors.forename: Robin
authors.initials: R
authors.lastname: Bocquet
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Lampin
authors.forename: Karine
authors.initials: K
authors.lastname: Blary
authors.forename: Emilien
authors.initials: E
authors.lastname: Peytavit
authors.forename: Tahsin
authors.initials: T
authors.lastname: Akalin
authors.forename: Guillaume
authors.initials: G
authors.lastname: Ducournau