Temperature Sensing with Up-Converting Submicron-Sized LiNbO 3 :Er 3+ /Yb 3+ Particles
2011; Institute of Physics; Volume: 4; Issue: 2 Linguagem: Inglês
10.1143/apex.4.022601
ISSN1882-0786
AutoresMarta Quintanilla, Eugenio Cantelar, F. Cussó, M. Villegas, A. C. Caballero,
Tópico(s)Solid State Laser Technologies
ResumoWe present the temperature dependence of the green up-converted luminescence in submicron-sized LiNbO3:Er3+/Yb3+ particles in the range between 12 and 180 °C. It is shown that LiNbO3:Er3+/Yb3+ exhibits a very high sensitivity (S = 0.007/°C at physiological temperature and a maximum value of S = 0.014/°C at 350 °C) that surpasses those previously found for other materials based on Er3+/Yb3+ luminescence, indicating that LiNbO3:Er3+/Yb3+ is a suitable probe for optical temperature sensing through the fluorescence intensity ratio technique. This high sensitivity can be explained using the intrinsic spectroscopic parameters of Er3+ ions in this host.
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