Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 66,
  • Issue 4,
  • pp. 458-463
  • (2012)

Minimizing the Effect of Extraneous Spikes in Open-Path Fourier Transform Infrared Interferograms

Not Accessible

Your library or personal account may give you access

Abstract

<b>Intense spikes caused by extraneous factors are sometimes found in the interferograms of open-path Fourier transform infrared (OP/FT-IR) measurements. Those spikes result in dominant oscillations in the corresponding spectra and make the true spectral features indistinguishable from the noise. Three techniques were designed to remove the spikes: replacing the affected region by zeroes; grafting the data from the corresponding region on the other side of the centerburst (“homografting”); and grafting the data from the same region on the same side of the centerburst from a neighboring interferogram (“heterografting”). Results showed that all three techniques were effective to remove the spikes, but at the cost of introducing more noise into the corresponding spectrum. The performance of the heterograft technique was the best in terms of noise reduction. The factors affecting the noise level of spectra computed from spike-removed interferograms were also explored. A procedure was proposed to minimize the effect of spikes on OP/FT-IR spectra, and a Matlab program with a graphical user interface is available upon request to facilitate the implementation.</b>

PDF Article
More Like This
Automatic baseline correction method for the open-path Fourier transform infrared spectra by using simple iterative averaging

Xianchun Shen, Liang Xu, Shubin Ye, Rong Hu, Ling Jin, Hanyang Xu, and Wenqing Liu
Opt. Express 26(10) A609-A614 (2018)

Methodology for computing Fourier-transform infrared spectroscopy interferograms

B. N. Carnio, O. Moutanabbir, and A. Y. Elezzabi
Appl. Opt. 62(17) 4518-4523 (2023)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved