宽带
材料科学
全息术
波前
极化(电化学)
光学
加密
平面的
全息数据存储
光电子学
计算机科学
物理
化学
物理化学
操作系统
计算机图形学(图像)
作者
Taimoor Naeem,Joohoon Kim,Hafiz Saad Khaliq,Junhwa Seong,Muhammad Tariq Saeed Chani,Tauseef Tauqeer,Muhammad Qasim Mehmood,Yehia Massoud,Junsuk Rho
标识
DOI:10.1002/adom.202202278
摘要
Abstract Next‐generation holographic displays have promising applications in medical science, augmented/virtual reality, smart security, data encryption, etc. Although metasurfaces emerged as the suitable choice to provide compact holographic displays, multifunctionality in metasurfaces at broadband optical wavelengths is inevitable for the abovementioned applications. Here, a metasurface is demonstrated based on chiral structures to introduce multifunctionality in terms of multiple wavefront information depending upon the polarization of incident light. The proposed metasurface integrated with a liquid crystal (LC) provides fast switching and dynamic optical response at broadband visible wavelengths in transmission mode. To avoid the phase distortion in multiple wavefront information embedded into a single planar metasurface, chiral z‐shaped meta‐atoms are used to provide high diffraction efficiency and phase chirality response for circularly polarized (CP) light illuminations. The phase mask of holographic information is encoded into the metasurface using a combination of dynamic and geometric phase modulation techniques. The experimental validation of the designed metasurface is performed to reproduce the spin‐dependent‐specific information at broadband visible wavelengths for changing the polarization of incident light. This research may pave the way toward designing highly efficient multifunctional metadevices to produce next‐generation holographic displays for promising applications in healthcare, media, smart security, and data encryption.
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