Improved Monochromatic Imaging Spectrometer

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Abstract:

Distortion inherent to a previously described system for acquisition of two-dimensional monochromatic spatial images is described. A solution is offered in the form of an improved instrument. The system uses a Czerny–Turner monochromator for spectral discrimination and a charge-coupled device (CCD) as the detector. A second Czerny–Turner monochromator, with identical dimensions, is added to correct the distortion, albeit with a slight loss in spatial resolution. With the earlier uncorrected arrangement, spatial resolution was on the order of 0.1 mm vertically and 0.3 mm horizontally, with a magnification of 0.52. With the same magnification, the new, corrected system offers spatial resolution of 0.1 mm vertically and 0.4 mm horizontally.

Keywords: IMAGE CORRECTION; IMAGING SPECTROSCOPY; MONOCHROMATIC IMAGING

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370206775382811

Affiliations: Department of Chemistry, Indiana University, Bloomington, Indiana 47405

Publication date: January 1, 2006

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