Choi, N., Lai, K.-H., & Fu, Y.-H. (2024). High efficiency metalens design using wavefront error optimization. In C. J. Chang-Hasnain, W. Zhou, A. Alù (Eds.), High Contrast Metastructures XIII (p. 33). SPIE. https://doi.org/10.1117/12.3002182
Abstract:
Conventional metalens design is based on the library where phases and transmissions of the meta-atoms are calculated with the periodic boundary condition. And the most suitable meta-atom is picked up from the library ignoring its environment. However, the coupling between adjacent meta-atoms produces the phase error, leading to low efficiency and scattering of the metalens. We proposed a method of numerical optimization of the wavefront error by adjusting the meta-atoms size, which reduces phase errors leading to higher efficiency compared to the conventional metalens design. This method is scalable for a large size metalens and for metalens with an arbitrary phase profile.
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Funding Info:
This research / project is supported by the Agency for Science, Technology and Research (A*STAR), Singapore - RIE2020 Advanced Manufacturing and Engineering (AME) Programmatic Grant
Grant Reference no. : A18A7b0058
This research / project is supported by the Agency for Science, Technology and Research (A*STAR), Singapore - Advanced Manufacturing and Engineering (AME) Individual Research Grant (IRG)
Grant Reference no. : A2083c0060
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