COMSOL中轴对称结构光散射与谐波产生的快速模拟
Fast simulation of light scattering and harmonic generation in axially symmetric structures in COMSOL
AI总结:
本文为COMSOL中轴对称结构的光散射与谐波产生提供快速模拟指南,涵盖散射截面、多极分解、光学力及二次谐波计算,并附可直接运行的模型。
摘要:
在光学和纳米光子学领域,电磁散射的模拟在研究复杂纳米结构和光学器件中扮演着重要角色。散射光谱的数值分析,即使是针对具有简单几何形状的纳米腔,也伴随着显著的计算困难。然而,当系统表现出一定的对称性时,通过变量分离的过程简化问题成为可能,这导致其维度的降低。在本文中,我们旨在为COMSOL Multiphysics中轴对称物体的线性和非线性散射问题的快速模拟提供实用指南,包括散射截面及其多极分解的计算、光学力以及二次谐波产生。我们还为所提供的指南配备了可直接运行的COMSOL模型。
英文摘要:
In the field of optics and nanophotonics, simulation of electromagnetic scattering plays a major role in the study of complex nanostructures and optical devices. The numerical analysis of scattering spectra, even for nanocavities with simple geometry, is associated with significant computational difficulties. However, when the system exhibits certain symmetries, it becomes possible to simplify the problem through the process of separation of variables, which leads to a decrease in its dimension. In this paper, we aim to provide a practical guide to a fast simulation of linear and non-linear scattering problems in COMSOL Multiphysics for axisymmetric objects including computation of scattering cross-section as well as its multipolar decomposition, optical forces, and second harmonic generation. We also accompany the provided guide with the ready-to-run COMSOL models.
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