15 October 2015 High luminance low etendue white light source using blue laser over static phosphor
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Proceedings Volume 9671, AOPC 2015: Advances in Laser Technology and Applications; 96710C (2015) https://doi.org/10.1117/12.2197760
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China
Abstract
A High Luminance White Light source for Etendue limited application has been demonstrated in this research paper by using blue InGaN laser diode beam over static source of phosphor Ce: YAG layer. Phosphor target has kept static because moving phosphor target light output is not constant and uniform. Different color temperatures had been obtained by varying phosphor concentration and thickness of the layer. When laser beam has focused on phosphor target spot, it induced very high temperature at that spot area. Temperature induced in the layer by laser beam depends on the layer thickness. All the layer thickness, surface temperature, output light flux, efficiency, and light color temperature are interrelate with each other. Uniform laser beam distribution, surface temperature, laser spot size, phosphor layer thickness are successfully calculated. Luminous efficiency, light color temperature, flux, wavelength spectrum, and light output power of laser driven white light source had been successfully observed at different laser beam powers.
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Tayyab Farooq, Tayyab Farooq, KeYuan Qian, KeYuan Qian, } "High luminance low etendue white light source using blue laser over static phosphor", Proc. SPIE 9671, AOPC 2015: Advances in Laser Technology and Applications, 96710C (15 October 2015); doi: 10.1117/12.2197760; https://doi.org/10.1117/12.2197760
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