Broadband high-efficiency dielectric metasurfaces for the visible spectrum

Metasurfaces are planar optical elements that hold promise for overcoming the limitations of refractive and conventional diffractive optics. Original dielectric metasurfaces are limited to transparency windows at infrared wavelengths because of significant optical absorption and loss at visible wavelengths. Thus, it is critical that new materials and nanofabrication techniques be developed to extend dielectric metasurfaces across the visible spectrum and to enable applications such as high numerical aperture lenses, color holograms, and wearable optics. Here, we demonstrate high performance dielectric metasurfaces in the form of holograms for red, green, and blue wavelengths with record absolute efficiency…

• NS
  National Science Foundation

  Award: ECS-0335765
• CS
  Charles Stark Draper Laboratory

  Award: SC001-0000000959
• MO
  Ministry of Science and Technology, Taiwan

  Award: 104-2917-I-564-058
• AF
  Air Force Office of Scientific Research

  Award: FA9550-14-1-0389