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Applied Optics

Applied Optics


  • Vol. 37, Iss. 25 — Sep. 1, 1998
  • pp: 5923–5931

Fourier-transform radiation thermometry: measurements and uncertainties

Pierre C. Dufour, Nelson L. Rowell, and Alan G. Steele  »View Author Affiliations

Applied Optics, Vol. 37, Issue 25, pp. 5923-5931 (1998)

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A Fourier-transform radiometer is used to measure blackbody temperatures in the 500–1000-K range. The measurements involve collecting mid-infrared spectra at two known reference temperatures and one unknown temperature. The accuracy of the interpolation measurement technique is discussed, and the effects of the uncertainty in the temperature reference points, the voltage ratio measurement, and the wavelength accuracy are described. Temperature accuracy at the 0.5% level has been achieved; the main uncertainty component is caused by the interferometer drift. Directions to reach 100-mk accuracy levels have been identified.

© 1998 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(120.6780) Instrumentation, measurement, and metrology : Temperature
(300.2140) Spectroscopy : Emission
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms
(300.6340) Spectroscopy : Spectroscopy, infrared

Original Manuscript: February 6, 1998
Revised Manuscript: April 27, 1998
Published: September 1, 1998

Pierre C. Dufour, Nelson L. Rowell, and Alan G. Steele, "Fourier-transform radiation thermometry: measurements and uncertainties," Appl. Opt. 37, 5923-5931 (1998)

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