Optical Heating Ability of Er3+-Yb3+ Embedded TeO2-WO3 Glass for Thermometric Applications

Abstract

The present research work details laser-induced optical heating ability of the Er³⁺-Yb³⁺ embedded TeO₂-WO₃ glass prepared by the melt-quenching process. The green upconversion emission observed through the ²H_11/2→⁴I_15/2 and ⁴S_3/2→⁴I_15/2 transitions of Er³⁺ ion upon 980 nm diode laser excitation was used to employ fluorescence intensity ratio technique. The results obtained from temperature sensing study were utilized to monitor temperature against pump power provided. The internal heating generated up to 627 K at 1840 mW pump power indicates the suitability of present glass in making an optical heater.