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On the fluorescence from integrating spheres

机译：关于积分球的荧光

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摘要

Our recent study of the performance of integrating spheres shows prominent UV induced fluorescence features that are associated with contamination of the diffusing wall material by hydrocarbons. Because of multiple reflections of the radiation inside the integrating sphere, fluorescence is induced multiple times with each reflection of the incident radiation by the wall. Here, we report a simple theory on the fluorescence of integrating spheres developed from first principles. The results indicate a strong dependence of fluorescence on the reflectance of the diffusing material at both the excitation and fluorescence wavelengths as well as the geometry of the integrating sphere. Because of multiple reflection of the exciting radiation, a gain of more than an order of magnitude in fluorescence is possible compared with direct and single irradiation of a flat piece of the diffusing/fluorescing material. Applications of such fluorescence analysis for integrating spheres are discussed.
机译：我们最近对积分球性能的研究表明，紫外线诱发的荧光特征很突出，与碳氢化合物对扩散壁材料的污染有关。由于积分球内部辐射的多次反射，壁每次入射辐射的每次反射都会多次诱发荧光。在这里，我们报告一个关于从第一原理发展而来的积分球荧光的简单理论。结果表明，荧光在激发和荧光波长以及积分球的几何形状上都强烈依赖于漫射材料的反射率。由于激发辐射的多次反射，与直接/单次散射/发荧光材料的平板的直接辐射相比，荧光的增益可能大于一个数量级。讨论了这种荧光分析在积分球中的应用。

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