Miniature Fourier Transform Instrument for Radiation Thermometry
F J. Dunmore, Leonard Hanssen
A miniature Fouier transform (FT0 spectrometer was evaluated as a device for remotely measuring the temperature of a high stability/emissivity blackbody. The device, commercially manufactured by Photonex LTD.,* is based on the novel design of a polarizing Wallaston prism spatial domain interferometer, with a Si diode array detector, and without any moving parts. The calibration of temperature using Planck's law showed a consistent non-linear effect. This results in a relative uncertainty 1% for measurement of temperatures 500K and above. Planned calibration measurements should reduce the nonlinearity related error and improve the FT temperature measurement.
International Conference on Fourier Transform Spectroscopy
blackbody, Planck's Law, Si diode array detector
and Hanssen, L.
Miniature Fourier Transform Instrument for Radiation Thermometry, International Conference on Fourier Transform Spectroscopy
(Accessed February 28, 2024)