多篇文獻指出，高功率藍光雷射激發螢光物質時，被照射區域會產生極高的溫度，使螢光物質發生熱淬滅現象，因此搭配雷射光源的螢光物質需要具備在高溫下還可保持一定的光轉換效率的特性，單晶螢光晶體就是其中一種具備以上特性的螢光物質之一。單晶螢光晶體具有極高的熱穩定性和光轉換效率，非常適合搭配高功率藍光雷射，在未來雷射白光照明應用扮演關鍵角色。然而單晶螢光晶體的折射率高於目前螢光粉封裝用的矽膠折射率，導致單晶螢光晶體的介面反射高於傳統螢光片，且單晶螢光晶體表面光滑、透明度高，使入射且未被吸收的藍光直接穿透而不會在內部發生散射，導致單晶螢光晶體的藍光光源利用率低於傳統螢光片。
本論文針對單晶螢光晶體探討其轉換效率、光源利用率、溫度及不同入射面對螢光特性的影響，並提出利用布魯斯特角解決單晶螢光晶體因折射率過高導致的高反射率，經實驗後發現，此方法可有效的提升藍光雷射光源的利用率，將藍光光源的利用率提升至接近100%。

More paper points out that high power blue laser diode excitation fluorescence material, illumination area will produce high temperature, thermal quenching phenomenon in the phosphor material, therefore with laser light source of phosphor material need to be at high temperatures can also maintain the characteristics of light conversion efficiency, the single crystal phosphor is one of the above characteristics of one of the phosphor material. Single crystal phosphor with high thermal stability and optical conversion efficiency are ideal for high-power blue lasers, which will play a key role in future laser white lighting applications. However single crystal phosphor refractive index is higher than the phosphor powder encapsulation of silicone refractive index, and lead to the single crystal phosphor interface reflection is higher than conventional fluorescence, and the single crystal phosphor surface is smooth, high transparency, the incidence and blue which are not absorbed directly through without scattering in internal, lead to the single crystal phosphor blue light utilization ratio is lower than traditional phosphor.
This paper in view of the single crystal phosphor to explore its conversion efficiency, the utilization rate of light, temperature and the influence of different incident in the face of the fluorescence characteristics, and put forward by using brewster Angle to solve the single crystal phosphor of high reflectivity, as a result of high refractive index by experiment and found that this method can effectively improve the utilization rate of blue laser light source, will increase the utilization ratio of blue light to near 100%.

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[24] FluoroMaxPlus,https://www.horiba.com/en_en/products/detail/action/show/Product/fluoromax-1576/
[25] THORLABS-M100D, https://www.thorlabs.com/thorproduct.cfm?partnumber=PM100D
[26] OceanOpticesUSB2000+, https://www.oceaninsight.com/products/spectrometers/usb-series/