Dielectric metasurfaces for complete and independent control of the optical amplitude and phase

@article{Overvig2019DielectricMF,
  title={Dielectric metasurfaces for complete and independent control of the optical amplitude and phase},
  author={Adam C. Overvig and Sajan Shrestha and Stephanie C. Malek and Ming Lu and Aaron Stein and Changxi Zheng and Nanfang Yu},
  journal={Light, Science \& Applications},
  year={2019},
  volume={8}
}
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… 

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