Glasses with the composition (75 NaPO₃-(25-x) CaO-xCaF₂) (in mol %) were prepared with 0.15 mol% of Er₂O_3. The effect of the glass composition and of heat treatment on the spectroscopic properties of the newly developed glasses is reported. With the progressive replacement of CaO by CaF₂, the Er³⁺:⁴I_13/2 lifetime and the intensity of the upconversion emission increase whereas the intensity of the emission at 1.5 μm decreases due to the decrease in the phonon energy in the as-prepared glasses. The glasses were heat treated at 20 °C above their respective glass transition temperature for 17 h to form nuclei and then at their crystallization temperature from 15min to 1 h to grow the nuclei into crystals. The heat treatment leads to the precipitation of crystalline phases, the composition of which depends upon the glass composition. As the Er³⁺:⁴I_13/2 lifetime increases and the intensity of the upconversion increases for the glass with x = 0 after heat treatment, the Er³⁺ ions are expected to be incorporated into the phosphate-based crystals. However, as the shape of the emission band at 1.5 μm remains unchanged and as the intensity of the upconversion decreases significantly after heat treatment of the glasses with x > 10, the crystals found in the glass-ceramics with x > 10 are thought to free of Er³⁺ ions. Although Er³⁺ ions entered in the CaF₂ crystals precipitating in aluminosilicate glass, the Er³⁺ ions are believed to remain in the amorphous phosphate part of the glass-ceramic containing CaF₂ crystals.

用0.15mol％的Er ₂ O ₃制备具有组成（75NaPO _3-（25-x）CaO-xCaF ₂）（以摩尔％计）的玻璃。玻璃组成和热处理对光谱性质的影响报告了新开发眼镜的数量。随着CaF ₂逐渐取代CaO ，Er ³⁺：⁴ I _13/2寿命和上转换发射的强度增加，而1.5μm的发射强度由于所制备的玻璃中声子能量的降低而降低。将玻璃在高于其各自的玻璃化转变温度的20°C下热处理17 h，以形成核，然后在其结晶温度下15min至1 h进行热处理，以使核生长成晶体。热处理导致结晶相的沉淀，结晶相的组成取决于玻璃的组成。随着Er ³⁺：⁴ I _13/2寿命的增加和热处理后x = 0的玻璃的上转换强度增加，Er ³⁺预期离子会结合到磷酸盐基晶体中。但是，由于对x> 10的玻璃进行热处理后，在1.5μm处的发射带形状保持不变，并且上转换强度显着降低，因此认为在x> 10的玻璃陶瓷中发现的晶体是自由的。 Er ³⁺离子。尽管Er ³⁺离子进入沉淀在铝硅酸盐玻璃中的CaF ₂晶体中，但据信Er ³⁺离子残留在含玻璃陶瓷的CaF ₂晶体的无定形磷酸盐部分中。