摘要
为了进一步提高固态白光光源的光效,探寻激发源与光效的关系,文章以菲涅尔理论为基础,研究了蓝光LED和LD作为激发源时,光能利用率随入射角及偏振角的关系。LED为激发源时,其光能利用率最大为96%;线偏振态LD为激发源时,入射角度为布儒斯特角、偏振角度为0°时,其光能利用率可达100%。研究表明在荧光转换型白光中,线偏振特性的LD相较于非偏振态的LED具有更好的光能利用率。基于所得结论提出了一种适用于LD激发荧光粉获取白光的荧光粉模块,并用蒙特卡罗光线追迹法进行了仿真验证,模拟结果与理论值完全吻合。
To further improve lighting efficiency of solid-state light source, explore the relationship between it and the excitation source, based on the Fresnel theory, the influence of incident Angle and polarization Angle to the light energy utilization of blue LED and LD was studied. For the LED, the maximum utilization rate of light energy is 96%; and for line polarization LD the light energy utilization rate can reach the maximum of 100% with Brewster Angle as the incident angle and 0° as the polarization angle. Based on the conclusions one phosphor powder packaging model used for laser driven white light was put forward and simulated based on Monte Carlo method.
出处
《半导体光电》
CAS
北大核心
2016年第5期656-659,共4页
Semiconductor Optoelectronics
基金
辽宁省高等学校优秀人才支持计划项目(LJQ2014055)
辽宁省自然基金项目(2014026004)
大连市引智项目(大人社发[2013]189)
关键词
激光白光
光能利用率
入射角度
偏振角度
laser drive white light
light energy utilization
incident angle
polarization angle
