Spin-isolated ultraviolet-visible dynamic meta-holographic displays with liquid crystal modulators

被引:29
作者
Asad, Aqsa [1 ]
Kim, Joohoon [2 ]
Khaliq, Hafiz Saad [1 ,3 ]
Mahmood, Nasir [4 ]
Akbar, Jehan [5 ]
Chani, Muhammad Tariq Saeed [6 ]
Kim, Yeseul [2 ]
Jeon, Dongmin [2 ]
Zubair, Muhammad [4 ]
Mehmood, Muhammad Qasim [1 ]
Massoud, Yehia [4 ]
Rho, Junsuk [2 ,7 ,8 ,9 ]
机构
[1] Informat Technol Univ ITU Punjab, Dept Elect Engn, MicroNano Lab, Lahore 54600, Pakistan
[2] Pohang Univ Sci & Technol POSTECH, Dept Mech Engn, Pohang 37673, South Korea
[3] Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea
[4] King Abdullah Univ Sci & Technol KAUST, Innovat Technol Labs ITL, Thuwal, Saudi Arabia
[5] Univ Elect Sci & Technol China, Glasgow Coll, Chengdu 610056, Peoples R China
[6] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, Jeddah, Saudi Arabia
[7] Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea
[8] POSCO POSTECH RIST Convergence Res Ctr Flat Opt &, Pohang 37673, South Korea
[9] Natl Inst Nanomat Technol NINT, Pohang 37673, South Korea
基金
新加坡国家研究基金会;
关键词
DIELECTRIC METASURFACES; RESONANCES; EFFICIENCY;
D O I
10.1039/d2nh00555g
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Wearable displays or head-mounted displays (HMDs) have the ability to create a virtual image in the field of view of one or both eyes. Such displays constitute the main platform for numerous virtual reality (VR)- and augmented reality (AR)-based applications. Meta-holographic displays integrated with AR technology have potential applications in the advertising, media, and healthcare sectors. In the previous decade, dielectric metasurfaces emerged as a suitable choice for designing compact devices for highly efficient displays. However, the small conversion efficiency, narrow bandwidth, and costly fabrication procedures limit the device's functionalities. Here, we proposed a spin-isolated dielectric multi-functional metasurface operating at broadband optical wavelengths with high transmission efficiency in the ultraviolet (UV) and visible (Vis) regimes. The proposed metasurface comprised silicon nitride (Si3N4)-based meta-atoms with high bandgap, i.e., similar to 5.9 eV, and encoded two holographic phase profiles. Previously, the multiple pieces of holographic information incorporated in the metasurfaces using interleaved and layer stacking techniques resulted in noisy and low-efficiency outputs. A single planar metasurface integrated with a liquid crystal was demonstrated numerically and experimentally in the current work to validate the spin-isolated dynamic UV-Vis holographic information at broadband wavelengths. In our opinion, the proposed metasurface can have promising applications in healthcare, optical security encryption, anti-counterfeiting, and UV-Vis nanophotonics.
引用
收藏
页码:759 / 766
页数:9
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