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Proceedings Paper

High-speed resonant FTIR spectrometer
Author(s): Julia Rentz Dupuis; David Carlson; David J. Mansur; Scott P. Newbry; Robert Vaillancourt; James R. Engel; Bradley Engel
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Paper Abstract

OPTRA is in the process of completing the development of a high speed resonant Fourier transform infrared (HSR-FTIR) spectrometer in support of the Army's thermal luminescence measurements of contaminants on surfaces. Our system employs a resonant scanning mirror which enables 6.2 kHz spectral acquisition rate with 27 cm-1 spectral resolution over the 700 to 1400 cm-1 spectral range. The design is ultimately projected to achieve a 10 kHz spectral acquisition rate with 8 cm-1 spectral resolution over the same spectral range. To date this system represents the highest/broadest combination of spectral acquisition rate and spectral range available. Our paper reports on the final design, build, and test of the HSR-FTIR prototype spectrometer system. We present a final radiometric analysis predicting system performance along with the details of the signal channel conditioning which addresses the effects of the high speed sinusoidal scanning. We present the final opto-mechanical design and the high speed interferogram acquisition scheme. We detail the system build and integration and describe the tests that will be performed to characterize the instrument. Finally, we offer a list of future improvements of the HSR-FTIR system.

Paper Details

Date Published: 17 May 2012
PDF: 12 pages
Proc. SPIE 8374, Next-Generation Spectroscopic Technologies V, 83740U (17 May 2012); doi: 10.1117/12.917319
Show Author Affiliations
Julia Rentz Dupuis, OPTRA, Inc. (United States)
David Carlson, OPTRA, Inc. (United States)
David J. Mansur, OPTRA, Inc. (United States)
Scott P. Newbry, OPTRA, Inc. (United States)
Robert Vaillancourt, OPTRA, Inc. (United States)
James R. Engel, OPTRA, Inc. (United States)
Bradley Engel, Nelson Air Corp. (United States)

Published in SPIE Proceedings Vol. 8374:
Next-Generation Spectroscopic Technologies V
Mark A. Druy; Richard A. Crocombe, Editor(s)

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