用于支持干扰谐振的纳米天线的增强的Purcell因子
Enhanced Purcell factor for nanoantennas supporting interfering resonances
摘要：
我们研究了介质谐振纳米天线中耦合共振和准束缚态对Purcell因子的影响。我们分析数值干扰共振的纳米盘和没有基板时，模式耦合到一个发射器定位在纳米盘内，我们量化的模式贡献的Purcell因子也重建的谐振系统的辐射模式。结果表明，Purcell效应可以大大提高了一个强耦合的准BIC制度的共振。
英文摘要：
We study the effect of coupled resonances and quasi-bound states in the continuum (quasi-BICs) on the Purcell factor in dielectric resonant nanoantennas. We analyze numerically interfering resonances in a nanodisk with and without a substrate when the modes are coupled to an emitter localized inside the nanodisk, and we quantify the modal contributions to the Purcell factor also reconstructing the radiation patterns of the resonant system. It is revealed that the Purcell effect can be boosted substantially for a strong coupling of resonances in the quasi-BIC regime.
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