Interferometric radiometer for continuous multicomponent monitoring

James R. Engel; James J. Connolly

doi:10.1117/12.199661

19 January 1995 Interferometric radiometer for continuous multicomponent monitoring

James R. Engel, James J. Connolly

Proceedings Volume 2367, Optical Sensors for Environmental and Chemical Process Monitoring; (1995) https://doi.org/10.1117/12.199661
Event: Optical Sensing for Environmental and Process Monitoring, 1994, McLean, VA, United States

Abstract

An optical monitoring technique that will produce an accurate qualitative measurement of simple multi-component optical spectra with a single direct measurement of interferogram phase is described. The analysis of absorption, emission or transmission spectra has proven to be a powerful tool for detecting chemical constituents in gaseous or liquid process streams. The pre-eminent instrument for this is the Fourier transform spectrometer (FTS); however, the high cost and relative fragility of these systems has prevented their widespread incorporation into chemical systems characterization. Using interferometric techniques similar to those used in FTS, but in a dramatically simplified embodiment, this system may provide the wavelength specificity and sensitivity of an FTS, with the low cost and ruggedness of a simple filter radiometer.

Citation Download Citation

James R. Engel and James J. Connolly "Interferometric radiometer for continuous multicomponent monitoring", Proc. SPIE 2367, Optical Sensors for Environmental and Chemical Process Monitoring, (19 January 1995); https://doi.org/10.1117/12.199661

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