论文标题
通过高索引介电纳米结构的几何形状优化的磁性和电锅螺旋因子控制
Magnetic and electric Purcell factor control through geometry optimization of high index dielectric nanostructures
论文作者
论文摘要
我们设计了平面硅天线，以控制磁性或电动偶极发射器的发射速率。耦合到绿色二元法的进化算法导致不同的优化几何形状取决于偶极子的性质和方向。通过模态分析，我们讨论了获得的配置的物理起源，但也强调了LDO的纳米级设计的作用。我们使用有限元方法完成了研究，并证明了Europium离子中磁性percell因子的增强。我们的工作汇集了随机优化，以探索没有约束的几何参数，这是一种理解优化设计和模态分析的一阶确定性方法，该方法阐明了磁性percell效应的升高的物理起源。
We design planar silicon antennas for controlling the emission rate of magnetic or electric dipolar emitters. Evolutionary algorithms coupled to the Green Dyadic Method lead to different optimized geometries which depend on the nature and orientation of the dipoles. We discuss the physical origin of the obtained configurations thanks to modal analysis but also emphasize the role of nanoscale design of the LDOS. We complete our study using finite element method and demonstrate an enhancement up to 2000 of the magnetic Purcell factor in europium ions. Our work brings together random optimizations to explore geometric parameters without constraint, a first order deterministic approach to understand the optimized designs and a modal analysis which clarifies the physical origin of the exaltation of the magnetic Purcell effect.
