Abstract

Here we report that a simple chiral metasurface with twisted metallic cut-wire arrays enables highly efficient and continuously tunable chiral absorption over a broad spectral range by scanning the incidence angle over a few degrees. The angle-selective chiral absorption results from the surface plasmon resonance (SPR) excited by diffractive effects of the metasurface. The diffraction-assisted chiral metasurface provides a straightforward strategy for achieving dynamically tunable chiral devices and offers intriguing possibilities for various applications in on-chip chiral detectors/emitters, chiral spectrometers, chiral lasers, and so on.

© 2022 Optica Publishing Group

Three-dimensional chiral metasurfaces for circular-polarized anomalous beam steering

Xijun Wu, Yue Feng, Chunyao Zhang, and H. L. Liu
Opt. Lett. 47(7) 1794-1797 (2022)

Active terahertz beam deflection and nonreciprocal spin chirality selection based on magneto-optical P-B metasurface with stacked-graphene layers

Dan Zhao, Zhiyu Tan, Huijun Zhao, Fei Fan, and Shengjiang Chang
Opt. Lett. 47(4) 818-821 (2022)

Controlling the spin-selective absorption with two-dimensional chiral plasmonic gratings

Wenxing Liu, Liren Mei, Yunhui Li, Longkun Yu, Zhenquan Lai, Tianbao Yu, and Hong Chen
Opt. Lett. 44(23) 5868-5871 (2019)

Realization of maximum optical intrinsic chirality with bilayer polyatomic metasurfaces

Xi Zhao, Zhancheng Li, Jiaqi Cheng, Wenwei Liu, Shiwang Yu, Yuebian Zhang, Hua Cheng, Jianguo Tian, and Shuqi Chen
Opt. Lett. 47(18) 4814-4817 (2022)

Giant optical chirality in dielectric metasurfaces induced by toroidal dipole resonances

Jiaju Wu, Haitao Jiang, ZhiWei Guo, Yong Sun, Yunhui Li, and Hong Chen
Opt. Lett. 48(4) 916-919 (2023)