Magneto-optical glass mixed with Tb3+ions: High Verdet constant and luminescence properties

Compared with crystal and transparent ceramics, magneto-optical glass is an attractive choice for applications in communication and larger power laser systems. However, the presence of rare-earth ions in magneto-optical glass can cause devitrification of the glass and require a higher melting temperature. This study aims to address these issues. High-temperature melting quenching technology was used to prepare highly transparent Tb3+ ion-doped GeO2-PbO-B2O3-SiO2 (GPBS) magneto-optical glass. Through XRD, FT-IR, DSC, chemical corrosion resistance, density test, UV-vis, fluorescence test, and Faraday rotation test, the effects of different Tb3+ ion concentrations on the thermal performance, chemical stability, structure, luminescence performance and magneto-optical performance of heavy metal oxide magneto-optic glass were studied. Notably, these glass materials exhibit high density, refractive index, optical basicity value, good thermal properties (101 degrees C), strong water and alkali resistance, excellent Faraday effect. The Verdet constants at different wavelengths also had notably high values. It was found that such glass has a strong green light emission at 544 nm, which demonstrates that this type of magneto-optical glass has broader application prospects in the preparation of laser elements and optoelectmnic functional devices.