In this study, we demonstrated an accurate estimation of the refractive index in nanoporous structures using a novel hybrid simulation method that combines electromagnetic field analysis and ray tracing based on wave optics and ray optics. A novel theoretical model for the refractive index in a nanoporous structure was developed using a simulation of the effective medium approximation (EMA) and screening effect with consideration of polarization dependence. The optical properties were then experimentally evaluated on aggregates of silica nanoparticles. Based on the measured properties, nanoparticles were predicted to have sufficient transparency for the optical cavity. A nanoporous microdisk laser was thus fabricated with laser dye to demonstrate that the nanoporous microdisk was capable of lasing. The microdisk functioned sufficiently as an optical cavity and had well-matched characteristics. This study provides a novel viewpoint of polarization dependence to estimate the refractive index of nanoporous materials by combining numerical simulations and experiments.

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通过传播电磁场的射线追踪对纳米多孔微腔进行偏振相关折射率分析

在这项研究中，我们使用一种新颖的混合模拟方法展示了对纳米多孔结构折射率的准确估计，该方法结合了基于波光学和射线光学的电磁场分析和射线追踪。使用有效介质近似 (EMA) 的模拟和考虑偏振相关性的屏蔽效应，开发了纳米多孔结构中折射率的新理论模型。然后在二氧化硅纳米粒子的聚集体上通过实验评估光学特性。基于测量的特性，预测纳米粒子对光学腔具有足够的透明度。因此用激光染料制造了纳米多孔微盘激光器，以证明纳米多孔微盘能够产生激光。微盘充分发挥了光腔的作用，并具有匹配良好的特性。该研究通过结合数值模拟和实验为估计纳米多孔材料的折射率提供了一种新的偏振依赖性观点。