全息术
光学
结构着色
镜面反射
全息显示器
波前
投影(关系代数)
计算机科学
消色差透镜
可见光谱
宽带
计算机视觉
人工智能
物理
光电子学
材料科学
光子晶体
算法
作者
Diane J. Roth,Mingke Jin,Alexander Minovich,Lan Song,Guixin Li,Anatoly V. Zayats
出处
期刊:Nano Letters
[American Chemical Society]
日期:2020-04-28
卷期号:20 (6): 4481-4486
被引量:13
标识
DOI:10.1021/acs.nanolett.0c01273
摘要
Metasurfaces provide an efficient approach to control light wavefronts and have emerged at the forefront of digital holography. Nevertheless, full-color image projection remains challenging. Using a combination of specular and diffuse reflections from a metasurface, in analogy to the normal mapping technique, we designed a reflective metasurface performing in the whole visible spectral range to demonstrate 2D images with shading effects of 3D objects. The noninterleaved metasurface is based on aluminum nanostructures with high and relatively uniform efficiency across the visible spectrum. It operates under incoherent illumination and does not require polarizing optics to observe images. The integration of the metasurface behind pre-existing transparent color images is also demonstrated for introduction of 3D effects. Emulating color 3D images with flat metasurfaces can be useful for security applications and decorative purposes. The design of broadband metasurface diffusers is also interesting for flat optical diffusing elements with engineered properties and display technology.
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