Vitrification, crystallization and spectral luminescence properties of the system Er2O3 - Yb2O3 - B2O3 - GeO2

Borogermanate glasses with a molar content of lanthanide oxides of 25% have been synthesized and investigated. It was found that their glass transition temperature t _g is ~ 770 ° C, approximately 200 ° C higher than t _g of laser phosphate glasses. In synthesized glasses, a relatively weak clustering of erbium is realized, the optical centers of which are characterized by high uniformity and a large value (86 - 90 nm) of the effective half-width of the luminescence band ⁴ I _13/2 & # 8594 ; ⁴ I _15/2 Er ³⁺ ions. Il. 5, bibliography: 9 titles.