Characteristics of chromium doped spinel crystals for a fiber-optic thermometer application

Citations Over TimeTop 10% of 2002 papers

Abstract

The chromium doped spinel crystals, MgAl2O4:Cr3+, have been grown using floating zone technique and its application for the fiber-optic thermometer is discussed on the basis of the temperature dependence of the fluorescence lifetime. Lifetimes of the spinel crystals (τ=10 ms), which decrease with temperature, were about 3 times larger than that of the ruby crystals (τ=4 ms) at room temperature. Temperature coefficients of the photoluminescence (PL) lifetimes for spinel crystals (37 μs/K) are also 3 times longer than that for the ruby crystals (10 μs/K). The spinel crystals are potentially useful sensor probes for the fiber-optic thermometer, which have an advantage of high sensitivity due to long PL lifetime and large temperature coefficient.

Related Papers

• → A method for improving temperature measurement accuracy on an infrared thermometer for the ambient temperature field(2020)27 cited
• → Application of a multichannel radiation thermometer for increase in adequacy of non-contact temperature measurement results(2015)6 cited
• → Key factors on the accuracy of measurement temperature by using infrared thermometer(2014)4 cited
• → Comparison of temperature measurements methods to investigate the causes of deformation of packaging materials during microwave heating(2016)1 cited
• → Systematic temperature measurement errors, caused by heat dissipation along the shield of industrial thermometer(2018)