采用溶胶-凝胶法制备出BaGd1-xEuxB9O16红色磷光粉，对过程的物料配比、前驱体处理和晶化温度等制备条件进行了讨论。结果表明，样品在850 ℃下开始晶化，900 ℃时就能够获得较好的晶化产物，结合不同晶化温度下的发光强度比较确定，晶化温度为950 ℃时，BaGd1-xEuxB9O16磷光粉具有较高的结晶状态和发光强度。当Eu浓度x=0.9时具有最大的发光强度；初始原料配比硼酸须按计量过量15%。所得荧光粉的激发光谱峰值为264，394，465，534 nm等，分别归属于Eu-O电荷迁移带及Eu3+的7F0-5L6、7F0-5D2和7F0-5D1跃迁，发射光谱呈Eu3+的特征红光，最强的发射峰位于614 nm，归属于5D0-7F2跃迁。进一步研究表明该磷光粉中存在着Gd3+对Eu3+的能量传递。

Organosilicone composite antireflective (AR) coating was successfully prepared for Ti-sapphire crystals by sol-gel process from precursors of tetraethoxysilane [Si(OC2H5)4, TEOS] and methyltriethoxysilane [CH3Si(OC2H5)3, MTEOS]. This AR coating possessed prominent AR effect within the output waveband (750～850 nm) of Ti-sapphire laser with average transmission above 98.6%, and its surface homogeneity met the requirements of the laser wavefront. The laser induced damage threshold (LIDT) of 2.2 J/cm2 was obtained at 800 nm with the pulse duration of 300 ps for this AR coating on Ti-sapphire crystals, which made it suitable for the optics of ultrashort pulse pico- and femtosecond high power lasers. Further, investigations on the performance of coating solution showed that the viscosity and coating refractive index both increased along with MTEOS prepolymer content, and effect of bake temperature on the latter was very small.

以硅酸四乙酯(TEOS)和甲基三乙氧基硅烷(MTEOS)为前驱材料,用溶胶-凝胶(sol-gel)方法在钛宝石表面制备得到均匀性良好且具有高激光损伤阈值的有机硅复合凝胶增透膜。膜层在钛宝石激光器输出波段(750～850 nm)的增透效果显著,其平均透过率超过98.6%;激光破坏阈值为2.2 J/cm2(800 nm,300 ps);膜层表面均匀性达到激光波面的要求,在皮秒、飞秒超短脉冲高功率激光领域具有应用价值。溶胶的性能测试结果表明,溶胶粘度和成膜折射率均随溶液中CH3SiO1.5溶胶体含量的增加而增大,而膜层折射率受烘烤温度影响较小。

通过溶胶-凝胶方法,利用有机硅烷(GLYMO)和正硅酸乙酯(TEOS)复合,制备出有机改性硅酸盐材料(ORMOSILS).该材料适合复制微光学元件,凝胶网络组成分析和相分离研究表明TEOS的预水解对材料性能的重要性.柱面透镜复制结果显示,复制的微光学元件基本保持母版的周期,纵向复制相对误差10%.ORMOSILS突破纯溶胶-凝胶的膜厚极限,避免凝胶干燥收缩引起尺寸的偏差.