Optical temperature sensing behavior of Dy3+-doped transparent alkaline earth fluoride glass ceramics

• Published in: Applied physics. A, Materials science & processing Vol. 123; no. 5; pp. 1 - 8
• Main Authors: Bu, Y. Y., Wang, Y. M., Yan, X. H.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-05-2017; Springer Nature B.V
• Subjects: Applied physics; Characterization and Evaluation of Materials; Condensed Matter Physics; Dysprosium; Machines; Manufacturing; Materials science; Nanotechnology; Optical and Electronic Materials; Physics; Physics and Astronomy; Processes; Surfaces and Interfaces; Thin Films; Fluorescence Intensity Ratio; Glass Ceramic; BaF2; SrF2; CaF2
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-017-0949-7

Dy
3+
-doped transparent BaF
2
, CaF
2
, and SrF
2
glass ceramics were fabricated, respectively, by a melt-quenching method, and their structures of resulting alkaline earth fluoride glass ceramics are studied by the X-ray diffraction and transmission electron microscopy. Temperature-dependent spectra, thermal quenching ratios, sensitivity are studied systematically in three kinds of glass ceramics. Using fluorescence intensity ratio method, the
4
I
15/2
and
4
F
9/2
of Dy
3+
ions are verified as thermally coupled energy levels. A new fitting method to establish the relation between fluorescence intensity ratios and temperature has been developed to reduce the error value of sensitivity. It is found that the values of sensor sensitivity
S
R
are dependent on host types, and the maximum
S
R
 = 0.00032 K
−1
is obtained at
T
 = 576.5 K in Dy
3+
-doped transparent SrF
2
glass ceramics.