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Broad-Band Polarization-Insensitive Metasurface Holography with a Single-Phase Map SCIE SCOPUS

Title
Broad-Band Polarization-Insensitive Metasurface Holography with a Single-Phase Map
Authors
Javed, IsmaKim, JoohoonNaveed, Muhammad AsharOh, Dong KyoJeon, DongminKim, InkiZubair, MuhammadMassoud, YehiaMehmood, Muhammad QasimRho, Junsuk
Date Issued
2022-08
Publisher
AMER CHEMICAL SOC
Abstract
The remarkable potential of metasurface holography promises revolutionary advancements for imaging, chip-integrated augmented/virtual reality (AR/VR) technology, and flat optical displays. The choice of constituent element geometry constrains many potential applications purveyed through polarization-independent optical response. The limited capabilities and degree of freedoms in commonly used meta-atoms restrict the design flexibility to break the conventional trade-off between polarization-insensitivity and bandwidth. Here, we propose a geometric phase-enabled novel design strategy to break this conventional trade-off. The proposed strategy ensures the realization of broad-band polarization-insensitivity through a simplified design procedure. An identical output wavefront manipulation is achieved by adjusting the phase delay freedom of geometric phase engineering under different incident polarization conditions. For proof of concept, a metahologram device is fabricated by an optimized complementary metal-oxide- semiconductor (CMOS)-compatible material of hydrogenated amorphous silicon (a-Si:H). This metahologram device reproduces the required hologram with high image fidelity and efficiency under different polarization scenarios of white light incidence. Due to the simple design strategy, low computational cost, and easy fabrication, the proposed technique can be an excellent candidate for realizing polarization-insensitive metahologram devices.
URI
https://oasis.postech.ac.kr/handle/2014.oak/117897
DOI
10.1021/acsami.2c07960
ISSN
1944-8244
Article Type
Article
Citation
ACS APPLIED MATERIALS & INTERFACES, vol. 14, no. 31, page. 36019 - 36026, 2022-08
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노준석RHO, JUNSUK
Dept of Mechanical Enginrg
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