Chaumet Patrick C
Aix Marseille Univ, CNRS, Centrale Med, Institut Fresnel, Marseille, France.
Nanophotonics. 2024 May 8;13(15):2857-2859. doi: 10.1515/nanoph-2023-0849. eCollection 2024 Jul.
The article entitled "Fast and accurate electromagnetic field calculation for substrate-supported metasurfaces using the discrete dipole approximation (DDA)" written by W. Liu and E. McLeod presents a method for computing the Green function in presence of a substrate or multilayer in an efficient way. Unfortunately, the proposed method has been known for more than twenty years and significantly ameliorated. It can be found in its optimized version in some open-source DDA codes. In this comment, we recall the different approaches (and related papers) addressing the computation of the Green function of a multilayered system. We show that they address all the points raised by Liu and McLeod in their paper and provide more efficient solutions to their computational issues.
W. Liu和E. McLeod撰写的题为《使用离散偶极子近似(DDA)对衬底支撑的超表面进行快速准确的电磁场计算》的文章提出了一种在存在衬底或多层结构的情况下高效计算格林函数的方法。不幸的是,所提出的方法二十多年前就已为人所知且有了显著改进。在一些开源DDA代码的优化版本中可以找到它。在本评论中,我们回顾了处理多层系统格林函数计算的不同方法(以及相关论文)。我们表明,它们解决了Liu和McLeod在其论文中提出的所有问题,并为他们的计算问题提供了更有效的解决方案。