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arXiv · 1908.03626

A single-layer panoramic metalens with > 170° diffraction-limited field of view

Mikhail Y. Shalaginov·Sensong An·Fan Yang·Peter Su·Dominika Lyzwa·Anuradha Agarwal·Hualiang Zhang·Juejun Hu·Tian Gu
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Abstract

Wide-angle optical functionality is crucial for implementation of advanced imaging and image projection devices. Conventionally, wide-angle operation is attained by complicated assembly of multiple optical elements. Recent advances in nanophotonics have led to metasurface lenses or metalenses, a new class of ultra-thin planar lenses utilizing subwavelength nanoantennas to gain full control of the phase, amplitude, and/or polarization of light. Here we present a novel metalens design capable of performing diffraction-limited focusing and imaging over an unprecedented > 170 degree angular field of view (FOV). The lens is monolithically integrated on a one-piece flat substrate and involves only a single layer of metasurface that corrects third-order Seidel aberrations including coma, astigmatism, and field curvature. The metalens further features a planar focal plane, which enables considerably simplified system architectures for applications in imaging and projection. We fabricated the metalens using Huygens meta-atoms operating at 5.2 micron wavelength and experimentally demonstrated aberration-free focusing and imaging over the entire FOV. The design concept is generic and can be readily adapted to different meta-atom geometries and wavelength ranges to meet diverse application demands.

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Mikhail Y. Shalaginov, Sensong An, Fan Yang, Peter Su, Dominika Lyzwa, Anuradha Agarwal, Hualiang Zhang, Juejun Hu, Tian Gu. 2019-09-19. A single-layer panoramic metalens with > 170° diffraction-limited field of view. https://arxiv.org/abs/1908.03626

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