全息术
光学
宽带
极化(电化学)
微波食品加热
电磁辐射
材料科学
光电子学
物理
计算机科学
电信
物理化学
化学
作者
Wei Ting Chen,Kuang-Yu Yang,Chih‐Ming Wang,Yao‐Wei Huang,Greg Sun,I-Da Chiang,Chun Yen Liao,Wei‐Lun Hsu,Hao Tsun Lin,Shulin Sun,Lei Zhou,A. Q. Liu,Din Ping Tsai
出处
期刊:Nano Letters
[American Chemical Society]
日期:2013-12-13
卷期号:14 (1): 225-230
被引量:712
摘要
Holograms, the optical devices to reconstruct predesigned images, show many applications in our daily life. However, applications of hologram are still limited by the constituent materials and therefore their working range is trapped at a particular electromagnetic region. In recent years, the metasurfaces, an array of subwavelength antenna with varying sizes, show the abilities to manipulate the phase of incident electromagnetic wave from visible to microwave frequencies. Here, we present a reflective-type and high-efficiency meta-hologram fabricated by metasurface for visible wavelength. Using gold cross nanoantennas as building blocks to construct our meta-hologram devices with thickness ∼ λ/4, the reconstructed images of meta-hologram show polarization-controlled dual images with high contrast, functioning for both coherent and incoherent light sources within a broad spectral range and under a wide range of incidence angles. The flexibility demonstrated here for our meta-hologram paves the road to a wide range of applications related to holographic images at arbitrary electromagnetic wave region.
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