WebMar 13, 2024 · (a) Left: schematic of metasurface with C 2 rotational symmetry and σ 1, 2 mirror symmetry. θ 0 is the span angle of the wall. R i and R e are the inner and external radius, respectively. Right: cross section of the metasurface. (b) Left: schematic of the chiral metasurface. Right: cross section. Δ θ denotes the perturbation of span angle ... WebMar 10, 2024 · In summary, we have demonstrated a silicon chiral metasurface with active chiroptical responses based on the nonlinear Kerr effect. In the linear regime, the planar metasurface exhibits two sharp chiral resonances originating from the guided mode resonances and the symmetry breaking due to an asymmetric pair of grooves in each …
Dual-wavelength chiral metasurfaces based on quasi-bound …
WebFeb 15, 2024 · In this paper, we introduce some theoretical foundations of the electromagnetic properties of tunable/reconfigurable chiral metasurfaces. When a linearly polarized light enters a tunable chiral metasurface, it can be decomposed into left-handed circularly polarized (LCP) wave and right-handed circularly polarized (RCP) wave. WebThe simulated and experimental results are consistent, which show the control performance of crosspolarized transmission components. Moreover, the bifunctional Janus metasurface is expected to highly extend the capabilities of metasurfaces for performing a variety of applications in space-multiplexed, chiral-sensing, data encryption, and ... how many weeks of school per year
Chiral Third-Harmonic Metasurface for Multiplexed Holograms
WebJan 29, 2024 · In particular, the chiral metasurface supports two chiral quasi-BIC resonances, which exhibit distinguished different properties. For example, the Q -factor of “mode 1” ( Q ≈ 938.2) is more than an order of magnitude higher than that of “mode 2” ( … WebNov 12, 2024 · This work experimentally and numerically demonstrates three-dimensional chiral dielectric metasurfaces exhibiting multipolar resonances and examines their chiro-optical properties, highlighting the mechanisms for maximizing the chiral response of photonic nanostructures and offering important opportunities for high-efficiency, ultrathin … WebDec 15, 2024 · Natural chiral materials usually have very weak circular dichroism (CD) responses. Here, we design and demonstrate one type of mid-infrared chiral metasurface absorber with strong chiroptical effects, which can achieve high CD in absorption above 0.57 over the wavelength range of 5 to 5. 9 μ m.The maximum absorption of the chiral … how many weeks of unemployment in florida