Alexandrite effect spectropyrometer

Yan Liu

doi:10.1117/12.674812

8 September 2006 Alexandrite effect spectropyrometer

Yan Liu

Proceedings Volume 6310, Photonic Devices and Algorithms for Computing VIII; 63100E (2006) https://doi.org/10.1117/12.674812
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Alexandrite crystal is commonly used for making alexandrite laser, and it also has a less-known phenomenon called the alexandrite effect that refers to the color change between different light sources. A novel spectropyrometer for temperature measurement of a radiating body utilizing the alexandrite effect is introduced. The alexandrite effect method for temperature measurement is based on the relationship between the temperature of blackbody and the hue-angle in the CIELAB color space. The alexandrite effect spectropyrometer consists of an optical probe, a spectrometer, a computer, and an alexandrite filter. It measures the spectral power distribution of a radiating body through the alexandrite filter, calculates the hue-angle, and determines the temperature. The spectropyrometer is suitable for temperature measurement of any radiating body with or without spectral lines in its spectral power distribution from 1000 K to 100000 K. The spectropyrometer is particularly useful for high to ultrahigh temperature measurement of any radiating bodies with spectral line emissions, such as electric arcs and discharges, plasmas, and high temperature flames.

Citation Download Citation

Yan Liu "Alexandrite effect spectropyrometer", Proc. SPIE 6310, Photonic Devices and Algorithms for Computing VIII, 63100E (8 September 2006); https://doi.org/10.1117/12.674812

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