Dielectric Metasurfaces for Complete and Independent Control of Optical Amplitude and Phase

Metasurfaces are optically thin metamaterials that promise complete control of the wavefront of light but are primarily used to control only the phase of light. Here, we present an approach, simple in concept and in practice, that uses meta-atoms with a varying degree of form birefringence and rotation angles to create high-efficiency dielectric metasurfaces that control both the optical amplitude and phase at one or two frequencies. This opens up applications in computer-generated holography, allowing faithful reproduction of both the phase and amplitude of a target holographic scene without the iterative algorithms required in phase-only holography. We demonstrate all-dielectric metasurface holograms with…

• DA
  Defense Advanced Research Projects Agency

  Award: D15AP00111, HR0011-17-2-0017
• DO
  Division of Electrical, Communications and Cyber Systems

  Award: ECCS-1307948