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Symmetric non-monochromatic light as reference in Fourier transform spectrometers

Date
2024
Abstract
Fourier transform spectrometers typically use a presumed monochromatic reference source to track and correct errors in optical path difference changes. This paper will conduct a theoretical analysis to show that non-monochromatic light sources with symmetric spectral profiles can also be used as reference sources without adding errors. An experiment was carried out using a symmetric broadband superluminescent diode (SLED) as reference light to measure the spectrum of some other SLED light sources to experimentally demonstrate this finding.
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Citation
Applied Spectroscopy, 2024
Collections
Physics
Bernal Institute
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Wen_2024_Symmetric.pdf
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Keywords
fourier transform spectroscopy, continuous scan interferometer, interferogram, interferometer, non-uniform sampling, optical path difference, OPD, optics, scanning algorithm, zero-path difference, Engineering
ULRR Identifiers
https://doi.org/10.34961/researchrepository-ul.28540901
 https://hdl.handle.net/10344/14435
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Sustainable Development Goals
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