High-efficiency broadband meta-hologram with polarization-controlled dual images

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, Ai Qun Liu, Din Ping Tsai

研究成果: 雜誌貢獻期刊論文同行評審

679 引文 斯高帕斯(Scopus)

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.

原文???core.languages.en_GB???
頁(從 - 到)225-230
頁數6
期刊Nano Letters
14
發行號1
DOIs
出版狀態已出版 - 8 1月 2014

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