Abstract
High-luminance light sources are challenging to achieve with light-emitting diodes (LEDs) due to power droop. Since laser diodes (LDs) do not suffer from power droop, they can be used as an alternative. A novel, to the best of our knowledge, high-luminance white light source was developed utilizing LDs combined with a sediment silicone/phosphor composite. The deposition of this sediment phosphor inside an aluminum spacer on top of a sapphire backplate ensures optimal thermal management. To enhance the optical performance, the sapphire plate is coated with a custom-designed blue pass filter in order to recycle most of the converted light that is emitted in the backward direction. The maximal obtained luminance of this light source is 103 MCd/m2 at a luminous flux of 3119 lm.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Qi Zhang, Ruilin Zheng, Jianyong Ding, and Wei Wei
Opt. Lett. 43(15) 3566-3569 (2018)
Nick Rondelez, António Correia, Wouter Ryckaert, Herbert De Smet, Dieter Cuypers, and Youri Meuret
Opt. Express 30(4) 5107-5120 (2022)
Yan Li, Xingfei Zhang, Hua Yang, Xiaoyan Yi, Junxi Wang, and Jinmin Li
Opt. Express 29(15) 24552-24560 (2021)