论文标题
用垂直极化激发的耦合金属纳米颗粒的散射，吸收和光致发光的统一处理
Unified Treatment for Scattering, Absorption, and Photoluminescence of coupled Metallic Nanoparticles with Vertical Polarized Excitation
论文作者
论文摘要
由于其独特的特性，例如耦合光谱的峰值移位/分裂以及在以前的工作中，我们已经研究了两种与平行极极性的MNP的耦合光谱。在这项研究中，我们详细研究了垂直极化情况。与平行的不同，垂直的属性具有独特的特性：（a）三个耦合系数； （b）耦合方程中的正耦合项； （c）峰的蓝骨，具有相同MNPS光谱的耦合强度的增加，包括散射，吸收和光致发光。与已发表的实验结果的比较显示了该模型的有效性。这项工作对耦合MNP的光学特性有了更深入的了解，并且对相关应用是有益的。
Optical properties of coupled metallic particles (MNPs) have been widely reported due to their unique characteristics such as peak shift/splitting of the coupling spectra and electromagnetic enhancement at sub-wavelength scale, etc. In a previous work, we have investigated the coupling spectra of two coupled MNPs with parallel polarized excitation. In this study, we investigate the vertical polarization case in detail. Different from the parallel one, the vertical one has its unique properties: (a) three coupling coefficients; (b) positive coupling terms in the coupling equations; (c) blue-shifts of the peaks with the increasing coupling strength for identical MNPs spectra, including scattering, absorption, and photoluminescence. Comparison with published experimental results shows the validity of this model. This work provides a deeper understanding on the optical properties of coupled MNPs and is beneficial to relevant applications.
