Infrared microspectroscopy using prism-based spectrographs and focal plane array detection

Several prism-based spectrographs employing a mercury cadmium telluride (MCT) focal plane array detector have been interfaced to an infrared microscope. In the combined system, the area-defining aperture of the microscope also served as the entrance slit to the spectrograph. This investigation consi...

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Bibliographic Details
Published inApplied spectroscopy Vol. 66; no. 3; p. 304
Main Authors Lanzarotta, Adam, Marcott, Curtis, Story, Gloria M, Dowrey, Anthony E, Sommer, André J
Format Journal Article
LanguageEnglish
Published United States 01.03.2012
Subjects
Cadmium Compounds - chemistry
Calcium Fluoride - chemistry
Mercury Compounds - chemistry
Polymers - chemistry
Sodium Chloride - chemistry
Spectrophotometry, Infrared - instrumentation
Spectrophotometry, Infrared - methods
Xylenes - chemistry
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Summary:Several prism-based spectrographs employing a mercury cadmium telluride (MCT) focal plane array detector have been interfaced to an infrared microscope. In the combined system, the area-defining aperture of the microscope also served as the entrance slit to the spectrograph. This investigation considered the fundamental limits of diffraction for both the spectrograph and microscope in order to determine both the spatial and spectral resolution of the system as a whole. Experimental results for spectral resolution, spectral range, and peak-to-peak noise have been presented. Finally, the dynamic capabilities of one spectrograph/microscope combination were investigated.
ISSN:1943-3530
DOI:10.1366/11-06412