journal article·2022-05-01Open access

An unconventional optical sparse aperture metalens

Yangeng Dong, Yu Lin, Ti Sun, Chong Zhang, Jingpei Hu, Chinhua Wang, Aijun Zeng, Huijie Huang

AIP Advances· Volume 12· Issue 5

Abstract

Metalens consisting of arrays of subwavelength nanostructures with ultrathin, lightweight, and tailorable characteristics have been in the spotlight to develop next-generation optical elements beyond existing refractive or diffractive optics. However, billions of subwavelength nanostructures of the metalens pose a serious challenge for fabrication, especially for the large-area ones. Herein, we designed and fabricated an unconventional optical sparse aperture (UOSA) metalens that consists of four identical and concentric annular sectors sub-aperture metalens, and it has the larger nonzero domain of modulation transfer function compared with the OSA metalens. The numerical simulation and experiments jointly show that the UOSA metalens has a limited diffraction resolution (0.91 µm) as the conventional full aperture metalens. The UOSA method can not only enlarge the effective aperture of the metalens with lower cost and less processing time but also extend a new degree of freedom for the design of the OSA metalens.
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Research context

OpenAlex topics: Metamaterials and Metasurfaces Applications · Advanced Antenna and Metasurface Technologies · Optical Coatings and Gratings

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Information Optics and Optoelectronic Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 1 , Shanghai 201800, China

University of Chinese Academy of Sciences 2 , Beijing 100049, China

Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science 3 , Suzhou 215123, China

Key Laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Laboratory of Modern Optical Technologies of Ministry of Education, Soochow University 4 , Suzhou 215006, China

Funding

Integrated Circuit Major Science and Technology Project of Shanghai · International Science and Technology Cooperation Program of Shanghai · National Natural Science Foundation of China

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