Improving laser performance at 1081 nm in Yb3+-doped tellurite glasses with low threshold

Author(s)

Lozano, C. G. ; dos Santos, J. F. M. ; Merizio, L. G. ; de Oliveira Jr, M. ; Messaddeq, Y. ; Marega Jr, E. ; Rivera, V. A. G.

• Document type: Journal article
• Source: Materials Research Bulletin; v. 189, p. 7-pg., 2025-09-01.

Abstract

Yb3+-doped glass lasers have promising applications in optical telecommunications, industrial processing, due to their broad or short emission and gain bandwidth, as well as their cost-effective maintenance and compact design. This research reports the laser operation of Yb3+-doped tellurite glass emitting at 1081 nm and evaluates its performance under varying pump powers using a continuous-wave diode laser at 976 nm, with a bandwidth of 20 nm. Our findings reveal that the glasses do not exhibit the formation of Yb3+ clusters. The laser efficiency increased from 1.7 % to 5.5 % as the concentration of Yb3+ ions was raised to 0.9 mol %, although quenching of the emission intensity at higher concentrations. The laser threshold was determined at a pump power of 120 mW, with the glasses showing good thermal stability without damage. These glasses offer new opportunities for applications in optical telecommunications, particularly in Ytterbium-Erbium-doped fibre amplifier systems as a pumping source. (AU)

• 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: 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: 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
• FAPESP's process: 23/11979-0 - Light-matter interaction in plasmonic metasurfaces of luminescent nanoglasses: spectroscopic and photothermal characterization
• Grantee: Jéssica Fabiana Mariano dos Santos
• Support Opportunities: Scholarships in Brazil - Post-Doctoral