WebFeb 23, 2024 · This work challenges some long-held notions about chiral metamaterials and metasurfaces. "Previously, people thought that to achieve a strong, intrinsic chiro-optical response, the structures had ... WebJan 29, 2024 · To this end, several pioneering studies reported on the creation of chiral quasi-BIC resonances with giant circular dichroism (CD) in dielectric platforms. These include pairs of ellipse dimers with a small out-of-plane distance, [ 33 ] tilted etch twisted dimers, [ 34 ] asymmetric high aspect ratio silicon disk arrays, [ 35 ] and bilayer ...
Chiral Bilayer All-Dielectric Metasurfaces - figshare.com
WebJun 8, 2024 · 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 a peak pump intensity of about 5 GW cm−2 can be achieved in the … WebWe would like to show you a description here but the site won’t allow us. slums of 18
All-dielectric Halide Perovskite Metasurfaces with Giant Chirality
WebJul 20, 2015 · Abstract. We experimentally demonstrate a functional silicon metadevice at telecom wavelengths that can efficiently control the wavefront of optical beams by imprinting a spatially varying transmittance phase independent of the polarization of the incident beam. Near-unity transmittance efficiency and close to 0–2π phase coverage are enabled ... WebThe concept of optical bound states in the continuum (BICs) currently drives the field of dielectric resonant nanophotonics, providing an important physical mechanism for engineering high-quality (high-Q) optical resonances in high-index dielectric nanoparticles and structured dielectric metasurfaces. For structured metallic metasurfaces, … WebChiral photonic metasurfaces were extensively studied because of their ability to act as ultrathin circular polarizers and their potential in chiral sensing [1, 2]. Chiral … solar heliospheric observa