The glass-forming region and 2.7 μm emission properties of Er3+-doped TeO2–MoO3–Nb2O5 tellurite glass

In this paper, the glass forming region of TeO2–MoO3–Nb2O5(TMN) tellurite glass and the luminescence properties of Er3+ doped TMN glass at 2.7 μm were studied. The effects of MoO3 on the thermal and optical properties of the glass were analyzed. The formation region of TMN glass was predicted by thermodynamic method and verified by experiment. It can be found that the glass-forming ability, thermal and optical properties of TMN glass change significantly with the change of MoO3 content. The addition of MoO3 significantly improves the anti-crystallization stability, fluorescence lifetime and quantum efficiency of tellurite glass. The calculation results show that the quantum efficiency of 80TeO2–15MoO3–5Nb2O5–1Er2O3 glass sample is 16 %. These results indicate that TMN glass has a broad application prospect in mid-infrared laser materials. The formation region of TMN glass was predicted and experimentally verified using thermodynamic methods. The effects of MoO3 on the luminescence properties and quantum efficiency of the tellurite glass were analyzed. The results show that the addition of MoO3 significantly improves the glass-forming properties and quantum efficiency of tellurite glass. [Display omitted] •The formation region of TMN tellurate glass was predicted and verified.•The prepared glasses have high quantum efficiency in 2.7 μm emission.•The prepared glasses have a large emission cross-section of 2.7 μm emission.•The modest introduction of MoO3 will improve quantum efficiency.