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Tolboom RA, Dam NJ, Sijtsema NM, et al. Quantitative spectrally resolved imaging through a spectrograph. Opt Lett. 2003;28(21):2046-8doi: 10.1364/ol.28.002046.
Tolboom, R. A., Dam, N. J., Sijtsema, N. M., & ter Meulen, J. J. (2003). Quantitative spectrally resolved imaging through a spectrograph. Optics letters, 28(21), 2046-8. https://doi.org/10.1364/ol.28.002046
Tolboom, René A L, et al. "Quantitative spectrally resolved imaging through a spectrograph." Optics letters vol. 28,21 (2003): 2046-8. doi: https://doi.org/10.1364/ol.28.002046
Tolboom RA, Dam NJ, Sijtsema NM, ter Meulen JJ. Quantitative spectrally resolved imaging through a spectrograph. Opt Lett. 2003 Nov 01;28(21):2046-8. doi: 10.1364/ol.28.002046. PMID: 14587810.
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Opt Lett. 2003 Nov 01;28(21):2046-8. doi: 10.1364/ol.28.002046.

Quantitative spectrally resolved imaging through a spectrograph.

Optics letters

René A L Tolboom, Nico J Dam, Nanna M Sijtsema, J J ter Meulen

Affiliations

  1. Applied Physics Group, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands.

PMID: 14587810 DOI: 10.1364/ol.28.002046

Abstract

A grating spectrograph can be used for spectrally selective two-dimensional imaging if it is operated with a broad entrance slit. The resulting intensity distribution in its exit plane is a one-dimensional convolution of the spatial and spectral distributions of incident light. We present a dedicated deconvolution filter to reconstruct the spatial image from the spectrograph output. The algorithm is illustrated on Raman imaging of an underexpanded dry air jet. Recorded Raman images correspond to density maps convolved with the Raman spectrum of air; the latter essentially acts as a blurring function for the density map. The deconvolution filter combines the individual images recorded in the O2 and N2 Raman bands into a single image of relative air density.

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