Journal
APPLIED SPECTROSCOPY
Volume 61, Issue 9, Pages 909-915Publisher
SOC APPLIED SPECTROSCOPY
DOI: 10.1366/000370207781745982
Keywords
planar array infrared spectroscopy; PAIRS; infrared microspectroscopy; prism spectrographs; dynamic infrared spectroscopy; grating spectrographs; array detectors
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A comparison of prism-based spectrographs to grating-based spectrographs is made when each of the systems is coupled to a modern-day liquid-nitrogen-cooled photovoltaic array detector. A comparison of the systems is also made using a room-temperature microbolometer array detector. Finally, infrared microspectroscopy of samples whose size is similar to 10 micrometers will be demonstrated using a prism spectrograph outfitted with both types of detectors. The results of the study show that prism-based spectrographs offer an economical alternative to grating-based systems when spectral coverage is more critical than spectral resolution. The results also demonstrate that spectra with good signal-to-noise ratios can be collected on any of the systems with a total integration time of 10 seconds or less.
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