Laser light illuminant based on YAG: Ce phosphor ceramic with ultra-high luminance, stable output, and excellent heat dissipation

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Optical Materials Pub Date : 2024-11-01 DOI:10.1016/j.optmat.2024.116410

Lichao Wang (王立超) , Yang Li (李杨) , Xindi Li (李新娣) , Yiwei Zhu (朱逸玮) , Cheng Zhang (张城) , Jian Kang (康健) , Cen Shao (邵岑) , Le Zhang (张乐) , Jun Zou (邹军)

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Abstract

A hundred-watt level blue collimated laser is used to excite YAG: Ce phosphor ceramics to prepare a high-power white laser-based illuminant. A composite ceramic cooling device is prepared to reduce the operating temperature of YAG: Ce phosphor ceramics by using nano-silver to weld ceramics onto a copper block with a water-cooling device. Phosphor ceramics encapsulated with the above device can withstand the excitation of a 123 W blue laser, and its output luminous flux value reaches 14600 lm. The stable output time of the laser-based illuminant is over 30 min, and the operating temperature of the phosphor ceramic surface is only 270 °C. Compared with the non-cooling device package, the luminous flux of the laser-based illuminant composed of phosphor ceramics packaged with the above structure is increased by 252.8 %. The experimental results show that the composite ceramic cooling device can effectively reduce the operating temperature of phosphor ceramics which is an effective way to realize white laser-based illuminants over 10000 lm.

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基于 YAG 的激光光源：具有超高亮度、稳定输出和出色散热性能的 Ce 磷光陶瓷

使用百瓦级蓝色准直激光激发 YAG：Ce 磷陶瓷，制备高功率白光激光照明剂。通过使用纳米银将陶瓷焊接到带有水冷装置的铜块上，制备了一种复合陶瓷冷却装置，以降低 YAG：Ce 磷光陶瓷的工作温度。使用上述装置封装的磷陶瓷可以承受 123 W 蓝色激光的激励，其输出光通量值达到 14600 lm。激光光源的稳定输出时间超过 30 分钟，而荧光粉陶瓷表面的工作温度仅为 270 ℃。与非冷却装置封装相比，采用上述结构封装的由荧光粉陶瓷组成的激光照明器的光通量提高了 252.8%。实验结果表明，复合陶瓷冷却装置可有效降低荧光粉陶瓷的工作温度，是实现 10000 流明以上白光激光照明灯的有效途径。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.