采用高温熔融法制备了镝离子掺杂氟硼酸盐玻璃荧光体, 利用积分球绝对光谱测试系统, 在453 nm蓝色激光二极管激发下, 对玻璃荧光体的荧光光谱进行表征, 解析出玻璃荧光体的相关绝对荧光参量。 测试与计算结果表明, 1.0 Wt% Dy2O3掺杂玻璃荧光体在功率15.81 mW的蓝色激光激发下, 净发射光谱功率是286.91 μW, 发射光子数为17.17×1014 cps, 其荧光量子产率达到25.86%。 为提高玻璃荧光体对泵浦激光的利用率, 减少残余激光成分, 进而改善组合光品质, 制备了大体积的1.5 Wt% Dy2O3掺杂玻璃荧光体, 在高功率的蓝色激光激发下获得白色照明效果, 该玻璃荧光体在激发功率分别为56.0和252.7 mW的激光激发下, 组合荧光对应的色坐标分别是(0.316, 0.287)和(0.303, 0.268)。 激光激励下的高效白色发光表明Dy3+掺杂氟硼酸盐玻璃荧光体在激光照明领域具有良好的应用前景。

Dy3+ doped fluoride borate glass phosphors are prepared with high temperature melting method. In addition, the fluorescence spectra of glass phosphors are determined under the 453nm blue laser using an integrating sphere test system, and the related absolute fluorescence parameters of glass phosphors are obtained. Experimental and calculation results reveal that net emission spectrum power, net emission photon number and the quantum yield are identified to be 286.91 μW, 17.17×1014 cps and 25.86% in 1.0 Wt% Dy2O3 doped fluoride borate glass phosphor under the excitation of blue laser with 15.81 mW, respectively. In order to improve the quality of white light combination, 1.5 Wt% Dy2O3 doped glass phosphor is synthesized to increase the utilization of pump laser and reduce residual blue laser. The white-light emission is obtained under the excitation of blue laser with high powers, and color coordinates of white luminescence are derived to (0.316, 0.287) and (0.303, 0.268) under the excitation of pumping laser with 56.0 and 252.7 mW exciting powers, respectively. The efficient white luminescence under the laser excitation indicates that Dy3+ doped fluoride borate glass phosphors have good application prospect in laser illumination area.