Recent Advances in Ultrathin Chiral Metasurfaces by Twisted Stacking
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202206141
Abstract: Artificial chiral nanostructures have been subjected to extensive research for their unique chiroptical activities. Planarized chiral films of ultrathin thicknesses are in particular demand for easy on‐chip integration and improved energy efficiency as polarization‐sensitive metadevices.… read more here.
Keywords: metasurfaces twisted; chiral metasurfaces; advances ultrathin; twisted stacking ... See more keywords
Dielectric Chiral Metasurfaces for Second‐Harmonic Generation with Strong Circular Dichroism
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DOI: 10.1002/andp.202000078
Abstract: Dielectric chiral metasurfaces can generate harmonic waves with high efficiency and strong circular dichroism (CD), when they are supported by metallic substrates. Numerical results show that the second‐harmonic generation (SHG) efficiency of about 10−3% for… read more here.
Keywords: chiral metasurfaces; circular dichroism; dielectric chiral; second harmonic ... See more keywords
Intelligent design of the chiral metasurfaces for flexible targets: combining a deep neural network with a policy proximal optimization algorithm.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.471629
Abstract: Recently, deep reinforcement learning (DRL) for metasurface design has received increased attention for its excellent decision-making ability in complex problems. However, time-consuming numerical simulation has hindered the adoption of DRL-based design method. Here we apply… read more here.
Keywords: metasurfaces flexible; deep neural; chiral metasurfaces; design ... See more keywords
Asymmetric reflection based on asymmetric coupling in single-layer extrinsic chiral metasurfaces.
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DOI: 10.1364/oe.478073
Abstract: We propose and experimentally demonstrate that giant asymmetric reflection of circularly polarized light based on asymmetric coupling can be achieved in single-layer extrinsic chiral metasurfaces at oblique incidence. The asymmetric coupling and asymmetric reflection in… read more here.
Keywords: asymmetric coupling; extrinsic chiral; chiral metasurfaces; asymmetric reflection ... See more keywords
Three-dimensional chiral metasurfaces for circular-polarized anomalous beam steering.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.450390
Abstract: Metasurfaces offer unprecedented possibilities for developing versatile ultracompact photonic devices with unique functions, e.g., for linear- or circular-polarized light beam steering. Here we report a three-dimensional (3D) chiral metasurface for phase controlling and beam steering,… read more here.
Keywords: beam steering; beam; dimensional chiral; chiral metasurfaces ... See more keywords