A Responsivity-based Criterion for Accurate Calibration of FTIR Emission Spectra: Identification of In-band Low-responsivity Wavenumbers
Document Type
Article
Publication Date
3-2011
Publication Title
Optics Express
Department
Chemistry
Abstract
Spectra measured by remote-sensing Fourier transform infrared spectrometers are often calibrated using two calibration sources. At wavenumbers where the absorption coefficient is large, air within the optical path of the instrument can absorb most calibration-source signal, resulting in extreme errors. In this paper, a criterion in terms of the instrument responsivity is used to identify such wavenumbers within the instrument bandwidth of two remote-sensing Fourier transform infrared spectrometers. Wavenumbers identified by the criterion are found to be correlated with strong absorption line-centers of water vapor. Advantages of using a responsivity-based criterion are demonstrated.
Volume
19
Issue
7
pp.
5930-5941
ISSN
1094-4087
WorldCat Link
Citation
Rowe, P. M., Neshyba, S. P., Cox, C. J., & Walden, V. P. (2011). A responsivity-based criterion for accurate calibration of FTIR emission spectra: identification of in-band low-responsivity wavenumbers. Optics Express, 19, 7, 5930-41.