<abstract xmlns="http://www.w3.org/1999/xhtml">

Optical thermometers are advantageous for temperature measurement in electromagnetic fields and aggressive environments; however, their composition mostly relies on materials doped with expensive and resource-limited rare earth ions.
In this article, we describe the application of calcium aluminate doped with transition metal ions (Mn2+ and Cr3+) in optical thermometry, employing optical fibres for signal transmission. Upon excitation with 450 nm laser diode radiation, changes in the luminescence of Mn2+ ions in the 500–550 nm band are followed along with changes in the Cr3+ band at 750–800 nm.
The application has been tested in the temperature range from 20 °C to 800 °C. The temperature dependence of Cr3+ luminescence encompasses the high-temperature range, whereas the luminescence band of Mn2+ ions gives an increase in the total intensity and provides a more consistent change in the range from 400 °C to 550 °C.
</abstract>

Optical thermometers are advantageous for temperature measurement in electromagnetic fields and aggressive environments; however, their composition mostly relies on materials doped with expensive and resource-limited rare earth ions.
In this article, we describe the application of calcium aluminate doped with transition metal ions (Mn2+ and Cr3+) in optical thermometry, employing optical fibres for signal transmission. Upon excitation with 450 nm laser diode radiation, changes in the luminescence of Mn2+ ions in the 500–550 nm band are followed along with changes in the Cr3+ band at 750–800 nm.
The application has been tested in the temperature range from 20 °C to 800 °C. The temperature dependence of Cr3+ luminescence encompasses the high-temperature range, whereas the luminescence band of Mn2+ ions gives an increase in the total intensity and provides a more consistent change in the range from 400 °C to 550 °C.

Application of Calcium Aluminate Doped with Mn and Cr in Optical Thermometry

Latvian Journal of Physics and Technical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Application of Calcium Aluminate Doped with Mn and Cr in Optical Thermometry"}

Optical thermometers are advantageous for temperature measurement in electromagnetic fields and aggressive environments; however, their composition mostly...

Application of Calcium Aluminate Doped with Mn and Cr in Optical Thermometry

Published Online: Sep 29, 2023

Page range: 15 - 21

DOI: https://doi.org/10.2478/lpts-2023-0027

Keywords
Calcium aluminate, electron paramagnetic resonance (EPR), Mn and Cr3+ ions, luminescence, optical thermometry

© 2023 U. Rogulis et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of Calcium Aluminate Doped with Mn and Cr in Optical Thermometry

Published Online: Sep 29, 2023

Page range: 15 - 21

DOI: https://doi.org/10.2478/lpts-2023-0027

KeywordsCalcium aluminate, electron paramagnetic resonance (EPR), Mn and Cr3+ ions, luminescence, optical thermometry

© 2023 U. Rogulis et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Calcium aluminate, electron paramagnetic resonance (EPR), Mn and Cr3+ ions, luminescence, optical thermometry