Application to temperature sensor based on Er3 +-doped barium borosilicate glasses at visible band

Details Application to temperature sensor based on Er3 +-doped barium borosilicate glasses at visible band Application to temperature sensor based on Er3 +-doped barium borosilicate glasses at visible band

Mar 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011opten..50c4404j&link_type=abstract

Optical Engineering, Volume 50, Issue 3, pp. 034404-034404-3 (2011).

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Applications

Borosilicate Glasses, Doping Profiles, Erbium, Fluorescence, Laser Sintering, Optical Frequency Conversion, Photoluminescence, Semiconductor Lasers, Temperature Measurement, Temperature Sensors, Visible Spectra, Thermometers, Pressure And Temperature Measurements, Absorption And Reflection Spectra: Visible And Ultraviolet, Laser Applications, Semiconductor Lasers, Laser Diodes, Design Of Specific Laser Systems

Scientific paper

The process of preparing Er3 +-doped barium borosilicate glass samples with different dopant concentrations using a high-temperature sintering technique is discussed. Under a 978-nm semiconductor laser excitation, the energy transfer from 2H11/2 to 4I15/2 and 4S3/2 to 4I15/2 caused by the transitions of Er3 + ions yields a 534- and a 549-nm green fluorescence. The relationship between the absolute temperature T and the fluorescence intensity ratio R of these two up-conversion photoluminescence spectra is discussed and fitted to the exponential function R = 1.782exp ( - 328/T) in the temperature range of 298 to 698 K. The sensitivity of the samples descends monotonously from 0.00219 to 0.00075 K-1 with the temperature increase from 298 to 698 K. The data are of undoubted repeatability, and the proposed doped glass is suitable for sensitive, high-temperature measurement.

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