COMPARISON OF TWO TEMPERATURE MEASUREMENT METHODS BY UPCONVERSION FLUORESCENCE SPECTRA OF ERBIUM-DOPED LEAD-FLUORIDE NANO-GLASS-CERAMICS

The study and compare of two temperature measurement methods is performed for the case of a lead-fluoride nano-glassceramics in the range from 317 to 423 K with a view to their application to temperature sensors. A method of temperaturemeasurement by means of violet, green and red upconversion fluor...

Full description

Saved in:
Bibliographic Details
Published in:Nauchno-tekhnicheskiĭ vestnik informat͡s︡ionnykh tekhnologiĭ, mekhaniki i optiki mekhaniki i optiki, 2015-05, Vol.15 (3), p.457
Main Authors: Aseev, V A, Varaksa, Y A, Kolobkova, E V, Sinitsin, G V, Khodasevich, M A, Yasyukevich, A S
Format: Article
Language:Russian
Subjects:
Accuracy
Banded structure
Erbium
Fluorescence
Fluorides
Glass ceramics
Measurement methods
Spectra
Temperature
Temperature dependence
Temperature measurement
Temperature sensors
Upconversion
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The study and compare of two temperature measurement methods is performed for the case of a lead-fluoride nano-glassceramics in the range from 317 to 423 K with a view to their application to temperature sensors. A method of temperaturemeasurement by means of violet, green and red upconversion fluorescence spectra regression on latent structures and a method of temperature measurement by two fluorescence bands intensity ratio in green range are considered. It is shown that a four-dimensional space of latent structures is an optimum one in terms of temperature measurement accuracy. It made possible temperature determining with a relative error not larger than 0.15% at temperatures higher than 340 K by making use of fluorescence spectra training set with the step of 10 K. The method using two green bands fluorescence intensity ratio is inferior by the accuracy. Independence of pump power fluctuations is a significant advantage of the second method. To take advantage of the first method a stabilization of the pump power is necessary. The results of the work can be taken into account while developing optical temperature sensors with a better performance (in relation to accuracy and measurementrange) compared to existing ones which utilize temperature redistribution of fluorescence intensities in two closely-spaced bands or temperature dependence of fluorescence lifetime.
ISSN:2226-1494
2500-0373
DOI:10.17586/2226-1494-2015-15-3-457-462