全息术
光学
反射(计算机编程)
传输(电信)
交错
电介质
物理
全息显示器
相(物质)
光电子学
计算机科学
电信
量子力学
操作系统
程序设计语言
作者
Guoxing Zheng,Nan Zhou,Liya Deng,Gongfa Li,Jin Tao
出处
期刊:Optics Express
[The Optical Society]
日期:2021-01-15
卷期号:29 (2): 2920-2920
被引量:36
摘要
Conventional metasurface holography is usually implemented in either transmission space or reflection space. Herein, we show a dielectric metasurface that can simultaneously project two independent holographic images in the transmission and reflection spaces, respectively, merely with a single-layer design approach. Specifically, two types of dielectric nanobricks in a nanostructured metasurface are employed to act as half-wave plates for geometric phase modulation. One type of nanobrick is designed to reflect most of incident circularly-polarized light into reflection space, enabled with magnetic resonance, while another type of nanobrick transmits it into transmission space, without resonance involved. By controlling the orientation angles and randomly interleaving the two types of nanobricks to form a metasurface, a full-space metasurface hologram can be established. We experimentally demonstrate this trans-reflective meta-holography by encoding the geometric phase information of two independent images into a single metasurface, and all observed holographic images agree well with our predictions. Our research expands the field-of-view of metasurface holography from half- to full-space, which can find its markets in optical sensing, image displays, optical storages and many other potential applications .
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