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发光二极管归一化光谱模型的修正 总被引:1,自引:1,他引:0
受自吸收等因素的影响,由发光二极管(LED)归一化光谱模型得到的光谱与实测LED光谱之间存在差异。为得到与实测LED光谱相吻合的归一化光谱模型,将由归一化光谱模型得到的理论光谱与实测光谱相减得到近似的自吸收谱。通过分析自吸收谱的峰值强度和半峰全宽与温度之间的关系以及其峰值能量与实测光谱峰值能量之间的定量关系,结合LED光谱的高斯模型和归一化光谱模型给出了自吸收谱的拟合表达式,并作为归一化光谱模型的修正项,对归一化光谱模型进行修正。在不同测试温度下的实验结果表明修正后的平均模型误差小于4%,证明由修正后的归一化光谱模型得到的光谱与实测光谱相吻合。 相似文献
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在研究借鉴一种可追究协议NCP的基础上,提出一种新的公平可追究协议.经过使用改进的Kailor逻辑分析验证,新的协议满足可追究和公平性原则,且可以工作在不安全和不可靠的信道上. 相似文献
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We present a planar model system of a silica covered with a monolayer of nonlinear graphene to achieve a tunable Goos–H?nchen(GH) shift in the terahertz range. It is theoretically found that the transition between a negative shift and a large positive one can be realized by altering the intensity of incident light. Moreover, by controlling the chemical potential of graphene and the incident angle of light, we can further control the tunable GH shift dynamically. Numerical simulations for GH shifts based on Gaussian waves are in good agreement with our theoretical calculations. 相似文献
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A kind of optical data storage medium based on electron-trapping materials,Y3Al5O12:Ce3+fluorescent ceramic,was developed by vacuum sintering technology.The medium shows sufficiently deep traps[1.67 and 0.77 eV).The properties of trap levels were researched by thermoluminescence curves,and the optical storage mechanism based on Ce3+ion doping was proposed.More importantly,the data can be written-in by 254 nm UV light,and readout by heating[3... 相似文献