Modeling of diffractive/meta-lenses using fast physical optics (Conference Presentation)
Modeling of diffractive/meta-lenses using fast physical optics (Conference Presentation)
复制标题
使用快速物理光学对衍射/超透镜进行建模（会议演示）
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
C. Hellmann
中科院分区：
文献类型：
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作者：
F. Wyrowski;Site Zhang;Liangxin Yang;C. Hellmann
衍射透镜和超透镜在现代光学系统中的重要性日益增加，因此研究和了解它们的功能至关重要。它们在成像系统，激光束整形，生物/医疗光学等各种应用中发挥着重要作用。我们提出了基于快速物理光学方法概念的衍射和超透镜建模方法。衍射或超透镜可以被建模为在基底界面上局部地起作用的一系列结构（例如，局部光栅）。每个局部结构引入一定的局部相位调制，并且通过将它们全部放在一起，可以实现透镜功能。在我们的方法中，严格的傅立叶模态方法（FMM），也被称为严格耦合波分析（RCWA），应用于分析的本地微/纳米结构，与所有的矢量效应和可能的高阶效应考虑在内，然后相位调制可以收集的透镜功能建模。以这种方式，具有衍射/超透镜的光学系统的多尺度模拟在实践中变得可行且有效。
The growing importance of diffractive and meta-lenses in modern optical systems makes it vital to investigate and understand their capabilities. They play an important role in various applications like imaging systems, laser-beam shaping, bio/medical-optics, etc. We propose methods for the modeling of diffractive and meta-lenses based on the concept of the fast-physical-optics approach. A diffractive or meta-lens can be modeled as a series of structures functioning locally (e.g. local gratings) on a base interface. Each local structure introduces a certain local phase modulation, and by putting all of them together, the lens functionality can be achieved. In our approach, the rigorous Fourier modal method (FMM), also known as the rigorous coupled wave analysis (RCWA), is applied for the analysis of the local micro-/nanostructures, with all vectorial effects and possible higher-order effects taken into consideration; then the phase modulations can be collected for the lens function modeling. In this manner, a multi-scale simulation of optical systems with diffractive/meta-lenses becomes feasible and efficient in practice.