Thermometry and optical study of Er3+-Yb3+doped tellurite glasses as a suitable candidate for optical fibre

Author(s)

Lozano, C. G. ; Rivera, V. A. G. ; Messaddeq, Y. ; Marega, E.

• Document type: Journal article
• Source: Journal of Alloys and Compounds; v. 948, p. 9-pg., 2023-03-27.

Abstract

Optical thermometers offer several advantages when dealing with fast response, stability against external factors and high thermal sensitivity. In this paper, tellurite glasses doped with Er3+-Yb3+ were fabricated by conventional melt-quenching technique. Absorption, luminescence under 380, 488 and 980 nm excitation and decay lifetime measurements were carried out to analyse the emission performance of the glasses. Two-photons process of the Er3+ emission in the visible region were confirmed by analysing the excitation power and up-conversion intensities under 980 nm. The temperature sensing was investigated under dif-ferent excitation processes, both up-conversion and down-shifting, using the fluorescence intensity ratio technique on the 2H11/2 and 4S3/2 thermally coupled levels in the range of 93-348 K. These glasses exhibit an excellent thermal response and high thermal sensitivities, turning them into propitious candidates for optical fibre and thermal sensing applications. (c) 2023 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 13/07276-1 - CEPOF - Optics and Photonic Research Center
• Grantee: Vanderlei Salvador Bagnato
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 20/04835-3 - Controlling the polarization state of rare earth emissions in tellurite glasses from plasmonic nano antennas
• Grantee: Gaston Lozano Calderón
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 22/05478-5 - Controlling the polarization state of rare-earth emissions in tellurite glasses from plasmonic nanostructures
• Grantee: Gaston Lozano Calderón
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate