Optimization of GC/FT-IR Measurements II: Optical Design

Authors: Yang, P.W.J.¹; Griffiths, P.R.²

Source: Applied Spectroscopy, Volume 38, Issue 6, Pages 755-910 (November/December 1984) , pp. 816-821(6)

Publisher: Society for Applied Spectroscopy

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Abstract:

Several optical designs for GC/FT-IR have been investigated. It was found that reflection losses occurring in the light-pipe cause the solid angle of the emerging beam to be much smaller than that of the input beam. This property permits a very small image at the detector to be achieved since the collection mirror may be mounted well away from the end of the light-pipe. With an optical configuration of this sort, the effect of radiation emitted from the light-pipe saturating the response of the detector is also minimized.

Keywords: Gas chromatography; Fourier transform infrared spectrometry; Optics; Light-pipes

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702844554710

Affiliations: 1: Department of Chemistry, University of California, Riverside, California 92521; present address: Division of Chemistry, National Research Council of Canada, Ottawa, Canada 2: Department of Chemistry, University of California, Riverside, California 92521

Publication date: 1984-11-01

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