紫外荧光二氧化硫分析仪中滤光器的优化  

Filter Optimization of UV Fluorescence Sulfur Dioxide Analyzer

作　　者：杜伟[1] 何振江[1] 韩鹏[1] 

机构地区：[1]华南师范大学物理与电信工程学院,广州510006

出　　处：《半导体光电》2013年第4期702-705,共4页Semiconductor Optoelectronics

基　　金：广东省教育部产学研结合项目(2007B090400135)

摘　　要：为了获得紫外荧光二氧化硫分析仪中所需的213.4nm激发光,研究了采用色散型紫外滤光器的参数优化,系统分析了装置中入射和出射狭缝对输出光的强度、稳定性及光谱纯度的影响,探讨了其物理机制,并通过实验得到了该装置中的最优参数为入射狭缝宽度50μm,出射狭缝宽度40μm。该结果对于提高仪器的准确性、灵敏度及长期稳定性等性能参数有重要意义。In order to obtain the 213.4 nm excitation light required by the UV fluorescence sulfur dioxide analyzer, it was studied the parameter optimization of using dispersive ultraviolet filter, and the impact of the entrance and exit slits on the intensity, stability and spectral purity of the output light was systematically analyzed in the equipment and the physical mechanisms were discussed. The results show that the optimal parameters of the equipment can be set as entrance slit of 50 μm and exit slit of 40μm, which is of great significance for improving the accuracy, sensitivity, and long-term stability of the analyzer.

关 键 词：紫外荧光 二氧化硫分析仪 紫外滤光器 

分 类 号：X831[环境科学与工程—环境工程]