Ultra-thin high-efficiency mid-infrared transmissive Huygens meta-optics
Author(s)Ding, Jun; An, Sensong; Zheng, Bowen; Deng, Longjiang; Zhang, Hualiang; Zhang, Li; Lin, Hongtao; Du, Qingyang; Yin, Gufan; Michon, Jerome; Zhang, Yifei; Fang, Zhuoran; Shalaginov, Mikhail; Gu, Tian; Hu, Juejun; ... Show more Show less
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The mid-infrared (mid-IR) is a strategically important band for numerous applications ranging from night vision to biochemical sensing. Here we theoretically analyzed and experimentally realized a Huygens metasurface platform capable of fulfilling a diverse cross-section of optical functions in the mid-IR. The meta-optical elements were constructed using high-index chalcogenide films deposited on fluoride substrates: the choices of wide-band transparent materials allow the design to be scaled across a broad infrared spectrum. Capitalizing on a two-component Huygens' meta-atom design, the meta-optical devices feature an ultra-thin profile (λ0/8 in thickness) and measured optical efficiencies up to 75% in transmissive mode for linearly polarized light, representing major improvements over state-of-the-art. We have also demonstrated mid-IR transmissive meta-lenses with diffraction-limited focusing and imaging performance. The projected size, weight and power advantages, coupled with the manufacturing scalability leveraging standard microfabrication technologies, make the Huygens meta-optical devices promising for next-generation mid-IR system applications.
Nature Publishing Group
Zhang, Li, et al. “Ultra-Thin High-Efficiency Mid-Infrared Transmissive Huygens Meta-Optics.” Nature Communications, vol. 9, no. 1, Dec. 2018. © 2018 The Authors
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