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  • 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference
  • (Optica Publishing Group, 2017),
  • paper EH_6_2

Silicon Huygens’ Metasurfaces at Oblique Incidence

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Abstract

Huygens’ metasurfaces that utilize tailored Mie-type resonances of dielectric particles form a versatile platform for the design of ultra-thin and highly-efficient wavefront-shaping devices [1–3]. Dielectric metasurfaces typically yield higher efficiencies than comparable plasmonic structures due to their significantly lower absorption losses. Furthermore, it was shown that the superposition of the radiation patterns of properly balanced electric and magnetic dipoles [4], or multipoles [5], can lead to the suppression of backscattering and thus to a transmittance approaching one over a wide range of wavelengths [6]. At the same time, phase shifts of the transmitted beam in the entire range of 2π become accessible. However, most devices are operated and discussed under the premise of normal incidence and it remained an open question how the performance of a device will change at oblique incidence.

© 2017 IEEE

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