Year: 2025
Type: article
Abstract: ：Metasurfaces with chiral responses are widely used in optics.To achieve a strong chiral response， most metasurface structures typically use two or more stacked layers of subwavelength structures with rotation or offset.However， the requirement for highly precise alignment increases the manufacturing difficulty and cost.This work introduces a single-layer dielectric metasurface with an intrinsic chiral response operating in the red light band.It has a circular dichroism transmittance of 0. 643 at 665 nm.Multipole decomposition analysis reveals that the several dipoles dominate the Mie resonance affecting the light scattering behavior.By analyzing the locally enhanced electric field distribution， it is revealed that the metasurface employs a C 2 -symmetric structure to regulate constructive and destructive interference， enabling selective transmission of circularly polarized light.These findings could expand the application of chiral dielectric metasurfaces in optical encryption， displays， and biological sensing.Key words： dielectric metasurface； chiral response； circular dichroism； visible light； circularly polarized light
Source: Chinese Journal of Luminescence
Authors: SUN Hao, YAN Songyan, ZHOU Chengyang, ZHANG Yun
Institution: Jiangsu University
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
Awards: G1681620524, G8296677323
OpenAlex ID: W4415490281
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