High efficiency metalens design using wavefront error optimization

Narak Choi; Keng Heng Lai; Yuan Hsing Fu

doi:10.1117/12.3002182

13 March 2024 High efficiency metalens design using wavefront error optimization

Narak Choi, Keng Heng Lai, Yuan Hsing Fu

Proceedings Volume 12897, High Contrast Metastructures XIII; 128970A (2024) https://doi.org/10.1117/12.3002182
Event: SPIE OPTO, 2024, San Francisco, California, United States

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.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Narak Choi, Keng Heng Lai, and Yuan Hsing Fu "High efficiency metalens design using wavefront error optimization", Proc. SPIE 12897, High Contrast Metastructures XIII, 128970A (13 March 2024); https://doi.org/10.1117/12.3002182

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