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Asymmetric phase modulation of light with parity-symmetry broken metasurfaces

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posted on 2023-05-17, 03:11 authored by Patrice Genevet, Elena Mikheeva, Remi Colom, Karim Achouri, Adam Overvig, Felix Binkowski, Jean-Yves Duboz, Sebastien Cueff, Shanhui Fan, Sven Burger, Andrea Alu
Optical components interact with light through radiative channels, and as such they experience intrinsic losses, giving rise to complex-valued eigenfrequencies and singularities. Spatial inversion symmetry breaking -implemented herein by controlling the coupling efficiency between input and output radiative channels of metasurfaces- lifts the directional degeneracy of reflection zeros, and introduces a complex singularity with a positive imaginary part for full 2π-phase modulation of light. Our work establishes a general framework to predict and study the response of resonant systems in photonics and metaoptics.

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Funder Name

Agence Nationale de la Recherche; European Innovation Council; Swiss National Science Foundation; AFORS MURI; Simons Foundation; Air Force Office of Scientific Research

Preprint ID

105897

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