荧光粉
光学
激光器
材料科学
白光
发光强度
光电子学
物理
作者
Anastasiia Krasnoshchoka,Anders Kragh Hansen,Anders Thorseth,Dominik Marti,Paul Michael Petersen,Jian Xu,Ole Bjarlin Jensen
出处
期刊:Optics Express
[The Optical Society]
日期:2020-02-14
卷期号:28 (4): 5758-5758
被引量:22
摘要
In laser lighting, a major benefit over other lighting techniques is the possibility to achieve very high luminous exitance. Focusing the exciting laser to a very small spot size on the phosphor, however, does not necessarily provide a very small emitting area for the white light. In this study we investigate experimentally and numerically the relationship between the white light spot size and the incident blue laser spot size. We show that the specific phosphor material properties have significant impact on this relationship and on the achievable minimum spot size. This constitutes a limitation on the minimum spot size achievable in laser lighting and has important implications in applications.
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