Using integrated absorption to calibrate optical cavity spectrometers

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Date
2015-03-02
Authors
Fullam, Donovan P.
Shoji, K.
Venables, Dean S.
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The Royal Society of Chemistry
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Abstract
Sensitive absorption techniques using optical cavities (such as CEAS or ICOS) generally need the spectrometer response to be calibrated for quantitative measurements. Most calibrations are based on the instrument response to a known, steady state absorption. Such calibrations often have drawbacks in terms of cost, complexity, or convenience, especially for field measurements. In this paper, we show that the relationship between the integrated absorption and a known amount of absorber provides an alternative calibration strategy that yields a highly linear calibration curve and has a low uncertainty. This method is straightforward to implement and offers a practical alternative to other calibration strategies.
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Keywords
Absorption spectra , Optical cavity spectrometers
Citation
FULLAM, D. P., SHOJI, K. & VENABLES, D. S. 2015. Using integrated absorption to calibrate optical cavity spectrometers. Analytical Methods, 7, 3298-3301. http://dx.doi.org/10.1039/C5AY00080G