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

Research output: Contribution to journalArticlepeer-review

539 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)225-230
Number of pages6
JournalNano Letters
Volume14
Issue number1
DOIs
StatePublished - 8 Jan 2014

Keywords

  • cross nanoantennas
  • meta-hologram
  • Metasurfaces
  • polarization-controlled dual images
  • reflection phase

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