TY - JOUR
T1 - Zone-Folded Quasi-bound State Metasurfaces with Customized, Symmetry-Protected Energy-Momentum Relations
AU - Overvig, Adam Christopher
AU - Cotrufo, Michele
AU - Markowitz, Matthew
AU - Zhou, You
AU - Hao, Bing
AU - Stensvad, Karl
AU - Schardt, Craig
AU - Alù, Andrea
N1 - Publisher Copyright:
© 2023 American Chemical Society
PY - 2023/6/21
Y1 - 2023/6/21
N2 - Energy-momentum (dispersion) relations are a foundational framework for photonic device design, but our incomplete command thereof still limits key technologies. For instance, narrowband optical combiners for augmented reality should ideally reflect with unitary efficiency selected wavelengths that encode the artificial information over a large range of oblique incident angles, yet they are conventionally severely limited in field of view by dispersion. Here, we engineer nonlocal metasurfaces to support quasi-bound states in continuum with zero first-order resonant frequency dispersion at any desired quasi-momentum by exploiting a zone-folding technique that leverages a change in the lattice family. Our platform thereby advances photonic devices by enabling unprecedented control over the energy-momentum properties of nonlocal states, rationally controlled through a perturbation scheme that produces minimal distortion to non-resonant light.
AB - Energy-momentum (dispersion) relations are a foundational framework for photonic device design, but our incomplete command thereof still limits key technologies. For instance, narrowband optical combiners for augmented reality should ideally reflect with unitary efficiency selected wavelengths that encode the artificial information over a large range of oblique incident angles, yet they are conventionally severely limited in field of view by dispersion. Here, we engineer nonlocal metasurfaces to support quasi-bound states in continuum with zero first-order resonant frequency dispersion at any desired quasi-momentum by exploiting a zone-folding technique that leverages a change in the lattice family. Our platform thereby advances photonic devices by enabling unprecedented control over the energy-momentum properties of nonlocal states, rationally controlled through a perturbation scheme that produces minimal distortion to non-resonant light.
KW - augmented reality
KW - band edges
KW - bound states in the continuum
KW - metasurfaces
KW - symmetry-protected
KW - zone folding
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U2 - 10.1021/acsphotonics.3c00179
DO - 10.1021/acsphotonics.3c00179
M3 - Article
AN - SCOPUS:85160826040
VL - 10
SP - 1832
EP - 1840
JO - ACS Photonics
JF - ACS Photonics
IS - 6
ER -