Theoretical and practical analysis of spatial and spectral calibration of static Fourier transform infrared spectrometers | Zendy

Alain Kattnig | Zendy

Open Access

Theoretical and practical analysis of spatial and spectral calibration of static Fourier transform infrared spectrometers

Author(s) -

Alain Kattnig

Publication year - 2019

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.27.014819

Subject(s) - superposition principle , optics , calibration , fourier transform , spectrometer , infrared , fourier transform spectroscopy , remote sensing , spatial frequency , fast fourier transform , fourier transform infrared spectroscopy , computer science , physics , algorithm , geology , quantum mechanics

Static Fourier transform spectrometers require, especially in the infrared, a spatial calibration step. Unfortunately, the superposition of fringes on the measured images has a major impact on spatial calibration and therefore on the returned spectra. We first study how to pre-process images so that spectral errors are minimized. Then, we develop a spectrum formation model that is used to correct those spectral errors. The performance, evaluated on synthetic data, is remarkable and theoretically justifies the use of this calibration concept.

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