THERMALLY EXCITED LUMINESCENCE FROM RARE-EARTH DOPED SiO₂ FOR FIBER-OPTIC THERMOMETER

T. Katsumata, K. Morita, A. Okabe, H. Aizawa, S. Komuro, T. Morikawa

Abstract

Thermally excited luminescence from rare-earth element doped SiO₂ fibers were studied for the fiber-optic thermometer application in high temperature. Thermal radiation similar to the black body radiation was observed in visible light region from the SiO₂ fibers doped with Y, La, Ce, Pr, Eu, Tb and Lu. Visible light radiation peaks due to f-f transitions of rare-earth ions were clearly observed in the Nd, Dy, Er, Ho, Tm and Yb doped SiO₂ fibers. Intensity ratio of thermal radiation at different wavelength is suitable for the highly sensitive temperature measurement. The hybridization of fluorescent thermometry and thermal radiation thermometry is suggested to extend the temperature range and increase the temperature resolution.

Keywords

fiber-optic thermometer, thermal radiation, rare-earth metals

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PWC-2006-TC12-014u.pdf

DOI

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IMEKO TC

TC12 - Temperature and Thermal Measurements

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