Related Experiment Video
Updated: Jul 7, 2026

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
Published on: December 5, 2025
Fourier-transform radiation thermometry: measurements and uncertainties
Abstract:
A Fourier-transform radiometer is used to measure blackbody temperatures in the 5001000-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.
Related Concept Videos
Absorption of Radiation
Uncertainty in Measurement: Reading Instruments
Thermometers and Temperature Scales
As many physical properties depend on temperature, the variety of thermometers is...
Radiation: Applications
The average...
Applications of EMF Measurements
IR Spectrometers
