Emission properties of Er-doped silicate glass

Abstract

Emission properties at 1.5μm-band for Er3+-doped lanthano-silicate glass were investigated. Emission bandwidth of the glass is as broad as Bi2O3-based glass. Moreover, concentration quenching was not observed for the glass with the Er3+ concentration of 6000 ppm. Emission lifetime of 4|11/2 of the glass is about 20 μs, which is similar to that of silica glass. This means the glass has superior properties for application to broadband optical amplifier with high efficiency at 980 nm pumping.