Continuous spatial field confocal thermometry using lanthanide doped tellurite glass
Daniel Stavrevski,
E. P. Schartner,
Q. Sun
et al.
Abstract:Distinguishing between microscopic variances in temperature in both space and time with high precision can open up new opportunities in optical sensing. In this paper, we present a novel approach to optically measure temperature from the fluorescence of erbium:ytterbium doped tellurite glass, with fast temporal resolution at micron-scale localisation over an area with sub millimetre spatial dimensions. This confocal-based approach provides a micron-scale image of temperature variations over a 200 $$\upmu $$
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