The large thermal conductivity of phosphor materials is crucial for laser lighting. Since the laser beam for pumping is focused on a small spot size (usually less than 1 mm²), heat generation is unavoidable at this point. Composite ceramic phosphors for cool-white laser lighting, the correlated color temperature of which is around 5000 K, produced by mixing of yellow photoluminescent light from Y₃A₅O₁₂:Ce (YAG:Ce) with unutilized pumping blue light, were well studied. However, composite ceramic phosphors for warm-white around 3000 K are not as researched; this is because the difficulties in sintering nitride phosphors which are useful as red or orange phosphors. We have proposed improved ternary composite ceramic phosphors for warm-white laser lighting. The ceramic phosphors utilize a red phosphor: ((Ba,Sr)₂Si₅N₈:Eu), a yellow phosphor: (YAG:Ce), and a thermal conducting matrix: (Al₂O₃). There are two types of composite ceramics: Type A with higher emission efficiency, and Type B more effective for warm light. These composite ceramic phosphors have higher saturation input laser power than our previous one, in which Sr₂Si₅N₈ was utilized as a red phosphor. The improved ceramic phosphors (Type A) do not have a saturation peak of at least up to 16 W (power density:20 W/mm²) pumping laser power, but our previous one had a saturation peak at 6 W (power density:7.6 W/mm²). We recently got a good sample, the correlated color temperature of which is 3422 K, output efficiency is 177 lm/W, and general color rendering index (Ra) is 65. The improved ternary composite ceramic phosphors are extremely useful for warm-white laser lighting.

荧光粉材料的大导热性对于激光照明至关重要。由于用于泵浦的激光束集中在小光斑尺寸（通常小于 1 mm²）上，因此此时热量的产生是不可避免的。用于冷白光激光照明的复合陶瓷荧光粉，其相关色温约为 5000 K，由来自 Y₃A₅O₁₂：Ce （YAG：Ce） 的黄色光致发光光与未使用的泵浦蓝光混合产生，得到了很好的研究。然而，用于 3000 K 左右暖白色的复合陶瓷荧光粉并未得到研究;这是因为烧结可用作红色或橙色荧光粉的氮化物荧光粉存在困难。我们提出了用于暖白光激光照明的改进的三元复合陶瓷荧光粉。陶瓷荧光粉使用红色荧光粉：（（Ba，Sr）₂Si₅N₈：Eu）、黄色荧光粉：（YAG：Ce） 和导热基体：（Al₂O₃）。复合陶瓷有两种类型：A 型发射效率更高，B 型对暖光更有效。这些复合陶瓷荧光粉具有比我们以前的饱和输入激光功率更高的激光功率，其中 Sr₂Si₅N₈ 被用作红色荧光粉。改进的陶瓷荧光粉（A 型）没有至少高达 16 W（功率密度：20 W/mm²）泵浦激光功率的饱和峰值，但我们之前的饱和峰值为 6 W（功率密度：7.6 W/mm²）。我们最近得到了一个很好的样品，其相关色温为 3422 K，输出效率为 177 lm/W，一般显色指数 （Ra） 为 65。 改进的三元复合陶瓷荧光粉对于暖白光激光照明非常有用。