title: Multiple-pass cell for very-long-path infrared spectrometry.
abstract: A multiple-pass cell for mid-IR spectrometry that has been designed to operate in an evacuable environmental chamber is described. Using this new modified White arrangement, we can significantly increase the path length while keeping the spectrometric beam stable. An approximate expression that ties the number of reflections to the optimal signal-to-noise ratio in multiple-reflection cells is derived.
authors.affiliation: Laboratoire Interuniversitaire des Systèmes Atmosphériques, Unité Mixte de Recherche du Centre National de la Recherche Scientifique 7583, Université Paris 7 et Paris 12, Faculté des Sciences, 61, avenue du Général De Gaulle 94010 Créteil Cedex, France.
authors.forename: J F
authors.initials: JF
authors.lastname: Doussin
authors.forename: R
authors.initials: R
authors.lastname: Dominique
authors.forename: C
authors.initials: C
authors.lastname: Patrick