Monochrome metasurface lens design for optical wireless transceivers

Weiyu Chen; Kyle Renshaw

doi:10.1117/12.2663649

14 June 2023 Monochrome metasurface lens design for optical wireless transceivers

Weiyu Chen, Kyle Renshaw

Author Affiliations +

Proceedings Volume 12530, Advanced Optics for Imaging Applications: UV through LWIR VIII; 125300H (2023) https://doi.org/10.1117/12.2663649
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

We present a high performance nanohole metasurface lens design operating at 1550nm. We use a simple basis with features that can be made using DUV lithography so that the lens could be manufactured scalably and economically. Our basis consists of cylindrical nanoholes etched into a silicon wafer where the hole radius is the only degree of freedom. We design an anti-reflection (AR) coating for the exposed meta-atom surface to enable high transmission across the basis; we evaluated three candidate materials and selected ZnS because it yielded the best optical performance. Lens layout was performed using a parametric meta-atom library generated with finite-element analysis in CST studio under the local uniformity approximation. We modelled performance of the lens, including both transmission and diffraction losses, using a parametric blazed-grating library to represent small sections of the aperture and then sum across the aperture. We compare the lens performance against a bulk singlet.

Conference Presentation

Citation Download Citation

Weiyu Chen and Kyle Renshaw "Monochrome metasurface lens design for optical wireless transceivers", Proc. SPIE 12530, Advanced Optics for Imaging Applications: UV through LWIR VIII, 125300H (14 June 2023); https://doi.org/10.1117/12.2663649

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