圆极化
偶极子
光学
传输(电信)
激发态
透射率
紫外线
超材料
窄带
戒指(化学)
圆二色性
物理
材料科学
垂直的
光电子学
分子物理学
原子物理学
化学
几何学
微带线
结晶学
电信
量子力学
有机化学
计算机科学
数学
作者
Ying-Tsung Lee,Zhiyu Wang,Ya‐Lun Ho,Mu‐Hsin Chen,Jean‐Jacques Delaunay
摘要
Manipulation of circularly polarized light (CPL) in the ultraviolet (UV) region holds significant potential for advancing chiral molecules sensing. Recently, chiral metasurfaces have been applied to control CPL in the UV region. However, the spectral selectivity of the existing UV chiral metasurfaces is still limited. Here, we report rod-shaped and ring-shaped metasurfaces sustaining perpendicularly aligned magnetic dipoles (MDs) and capable of inducing narrowband transmission dips. These MDs can be selectively excited in an eccentric ring-shaped metasurface by left-handed and right-handed circularly polarized lights. By exploiting this phenomenon, the selective asymmetric transmission of CPL with opposite handedness within the UV region is reported. A circular asymmetric transmission with a transmittance dissymmetry factor as high as 1.56 and a narrow full width at half maximum of 1.2 nm is achieved.
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