Dispersion-Engineered Metasurface Doublet Design for Broadband and Wide-Angle Operation in the Visible Range
The development of a metasurface lens, which represents a flat optical element with subwavelength thickness, holds the potential for miniaturizing imaging systems. Nevertheless, the presence of aberrations poses a significant challenge for achieving optimal imaging quality out of it. Moreover, its p...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10163790/ |
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| Summary: | The development of a metasurface lens, which represents a flat optical element with subwavelength thickness, holds the potential for miniaturizing imaging systems. Nevertheless, the presence of aberrations poses a significant challenge for achieving optimal imaging quality out of it. Moreover, its practical utilization in cameras and wearable devices necessitates simultaneous correction of monochromatic and chromatic aberrations. We here propose a framework to design multi-layered, dispersion-engineered metasurfaces, which is capable of correcting monochromatic and chromatic aberrations in a simultaneous manner. Based on the scheme, we numerically demonstrate a novel metasurface doublet that gives rise to significant improvement in correction of both monochromatic and chromatic aberrations. The designed lens has a field-of-view of 50° and operates in the broadband visible region from 450 to 650 nm. |
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| ISSN: | 1943-0655 |