Novel design strategy for three-channel meta-holography and meta-nanoprinting

Muhammad Ashar Naveed; Isma Javed; Muhammad Qasim Mehmood; Muhammad Zubair; Yehia Massoud

doi:10.1117/12.2644700

19 December 2022 Novel design strategy for three-channel meta-holography and meta-nanoprinting

Muhammad Ashar Naveed, Isma Javed, Muhammad Qasim Mehmood, Muhammad Zubair, Yehia Massoud

Proceedings Volume 12318, Holography, Diffractive Optics, and Applications XII; 1231805 (2022) https://doi.org/10.1117/12.2644700
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

Multi-functional metasurfaces have gained broad attention recently, as they bring great possibilities for high-dense multi-functional meta-devices, such as projecting holograms and displaying continuous gray-scale images simultaneously. However, currently reported metasurfaces to perform these operations separately. Furthermore, their complex multilayer and super-cell design strategies complicate both design and fabrication processes. This applies a limit on miniaturized, low-cost, integrated multi-functional meta-optics. Here we report a novel single-unit cell-based design strategy to demonstrate a tri-functional metasurface. By merging the spin-decoupling strategy with Mull’s law amplitude manipulation, a three-in-one metasurface is designed to project two independent holographic images in the far field and one continuous gray-scale image in the near-field of the metasurface. Specifically, far-field holographic images are projected on orthogonal helicities of white CP light, whereas a near-field image is decoded by creating an orthogonally linearly polarized light path. Furthermore, we optimized a novel gallium phosphide (GaP) material to verify the proposed design strategy for a tri-channel metasurface. The proposed metasurface has high transmission efficiency in the visible regime and verified our design strategy without adding extra complexities to conventional nano-pillar geometry. Therefore, our metasurface opens new avenues in multi-functional meta-device designing and has promising applications in anti-counterfeiting, optical storage, image displays, etc.

Conference Presentation

Citation Download Citation

Muhammad Ashar Naveed, Isma Javed, Muhammad Qasim Mehmood, Muhammad Zubair, and Yehia Massoud "Novel design strategy for three-channel meta-holography and meta-nanoprinting", Proc. SPIE 12318, Holography, Diffractive Optics, and Applications XII, 1231805 (19 December 2022); https://doi.org/10.1117/12.2644700

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