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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 1 — Jan. 3, 2011

Deconvolution in Acousto-Optical Tunable Filter Spectrometry

Jaka Katrašnik, Franjo Pernuš, and Boštjan Likar

Applied Spectroscopy, Vol. 64, Issue 11, pp. 1265-1273 (2010)

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Spectrometers and spectral imaging systems based on the acousto-optical tunable filter (AOTF) are becoming commonly used in many different fields in which high spectral resolution is crucial, e.g., laser-induced breakdown spectroscopy, Raman spectroscopy, and absorption spectroscopy of gases. As AOTFs have many advantages over other spectroscopic instruments but lack spectral resolution, a procedure for resolution enhancement, composed of point spread function characterization and spectrum preprocessing and deconvolution, is proposed. Wiener, Fourierwavelet regularized (ForWaRD), Richardson–Lucy, and Wavelet–Lucy deconvolution methods were tested and their performances assessed with two deconvolution quality measures: resolution enhancement and noise amplification. It was shown that the proposed spectral resolution enhancement is feasible and gives good results for line spectra and highly dynamic spectra.

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Vol. 6, Iss. 1 Virtual Journal for Biomedical Optics

Jaka Katrašnik, Franjo Pernuš, and Boštjan Likar, "Deconvolution in Acousto-Optical Tunable Filter Spectrometry," Appl. Spectrosc. 64, 1265-1273 (2010)

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