论文标题
表面等离子体增强的荧光：在准静态极限下自洽的经典处理
Surface plasmon enhanced fluorescence: self-consistent classical treatment in the quasi-static limit
论文作者
论文摘要
对于许多物理和生物学应用，与介电和金属接口非常接近分子发射的问题非常重要。在这里，我们从经典电磁学的角度出现了问题的精确处理。表面荧光增强的自洽分析理论是针对由与核心壳金属 - 金属二电纳米颗粒相邻的发射极组成的结构开发的。研究了荧光增强对激发激光和荧光频率以及发射极对纳米颗粒界面的距离的依赖性。开发的理论预测，在中间距离处的荧光增强，以及发射淬灭到非辐射表面等离子体（SP）模式中，占主导地位的短距离响应。确定了两种核心壳配置的最佳排放增强条件。该理论可以应用于与SP增强荧光光谱相关的各种应用的分析和优化。
The problem of enhanced molecular emission in close proximity to dielectric and metallic interfaces is of great importance for many physical and biological applications. Here we present an exact treatment of the problem from the view point of classical electromagnetism. Self-consistent analytical theory of the surface fluorescence enhancement is developed for configurations consisting of an emitter in proximity to core-shell metal-dielectric nanoparticles. The dependence of the fluorescence enhancement on the excitation laser and fluorescence frequencies and distance of the emitter to the nanoparticle interface are studied. The developed theory predicts enhanced fluorescence at intermediate distances as well as emission quenching into non-radiative surface plasmon (SP) modes dominating the response for short distances. The conditions for optimal emission enhancement for two core-shell configurations are determined. The theory can be applied toward analyzes and optimization of various applications related to SP enhance fluorescence spectroscopy.
