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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 34 — Dec. 1, 1997
  • pp: 8896–8908

Testing the radiometric accuracy of Fourier transform infrared transmittance measurements

S. G. Kaplan, L. M. Hanssen, and R. U. Datla  »View Author Affiliations


Applied Optics, Vol. 36, Issue 34, pp. 8896-8908 (1997)
http://dx.doi.org/10.1364/AO.36.008896


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Abstract

We have investigated the ordinate scale accuracy of ambient temperature transmittance measurements made with a Fourier transform infrared (FT-IR) spectrophotometer over the wavelength range of 2–10 μm. Two approaches are used: (1) measurements of Si wafers whose index of refraction are well known from 2 to 5 μm, in which case the FT-IR result is compared with calculated values; (2) comparison of FT-IR and laser transmittance measurements at 3.39 and 10.6 μm on nominally neutral-density filters that are free of etaloning effects. Various schemes are employed to estimate and reduce systematic error sources in both the FT-IR and laser measurements, and quantitative uncertainty analyses are performed.

© 1997 Optical Society of America

Citation
S. G. Kaplan, L. M. Hanssen, and R. U. Datla, "Testing the radiometric accuracy of Fourier transform infrared transmittance measurements," Appl. Opt. 36, 8896-8908 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-34-8896

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