Angle-multiplexed metasurfaces: encoding independent wavefronts in a single metasurface under different illumination angles

@article{Kamali2017AnglemultiplexedME,
  title={Angle-multiplexed metasurfaces: encoding independent wavefronts in a single metasurface under different illumination angles},
  author={Seyedeh Mahsa Kamali and Ehsan Arbabi and Amir Arbabi and Yu Horie and Mohammadsadegh Faraji-Dana and Andrei Faraon},
  journal={arXiv: Optics},
  year={2017}
}
The angular response of thin diffractive optical elements is highly correlated. For example, the angles of incidence and diffraction of a grating are locked through the grating momentum determined by the grating period. Other diffractive devices, including conventional metasurfaces, have a similar angular behavior due to the fixed locations of the Fresnel zone boundaries and the weak angular sensitivity of the meta-atoms. To alter this fundamental property, we introduce angle-multiplexed… 
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