Meta-atom library generation via an efficient multi-objective shape optimization method

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49 Scopus citations


aOptimizing the shape of metasurface unit cells can lead to tremendous performance gains in several critically important areas. This paper presents a method of generating and optimizing freeform shapes to improve efficiency and achieve multiple metasurface functionalities (e.g., different polarization responses). The designs are generated using a three-dimensional surface contour method, which can produce an extensive range of nearly arbitrary shapes using only a few variables. Unlike gradient-based topology optimization, the proposed method is compatible with existing global optimization techniques that have been shown to significantly outperform local optimization algorithms, especially in complex and multimodal design spaces.

Original languageEnglish (US)
Pages (from-to)24229-24242
Number of pages14
JournalOptics Express
Issue number16
StatePublished - Aug 3 2020

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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