Standardizing and calibrating a spectrometric instrument

Details Standardizing and calibrating a spectrometric instrument Standardizing and calibrating a spectrometric instrument

G - Physics

01

J

G01J 3/02 (2006.01) G01N 21/25 (2006.01) G01N 37/00 (2006.01) G06F 17/00 (2006.01)

Patent

CA 2455136

A spectrometric instrument which exhibits an intrinsic profile for a sharp spectral line produces profile data for narrow spectral lines. The spectral lines are effected with a high finesse etalon of gold coated polymer. A transformation filter is computed for transforming the profile data to a gaussian profile. A wavelength calibration is combined with the filter to effect a correction matrix which is applied to sample data to generate calibrated standardized data. Iteratively a correction matrix is applied to calibration data to generate standardized calibration data which is utilized for the wavelength calibration. Calibration is effected with an optical standard, an interference etalon and a fringe formula. Etalon effective thickness is first estimated and then precisely determined so that fringe peaks calibrate wavelength.

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