Meta-atom library generation via an efficient multi-objective shape optimization method
Abstract
Optimizing 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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 31, 2020
- Source ID
- 10.1364/oe.398332
Entities
People
- Douglas H. Werner
- Eric B. Whiting
- Lei Kang
- Sawyer D. Campbell
Organizations
- Defense Advanced Research Projects Agency