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physics.app-ph2022
Generation of superhelical time-varying OAM beam with space-time-coding digital metasurface
Jingxin Zhang, Peixing Li, Alex M H Wong +1
The recently proposed extreme-ultraviolet (EUV) beams with time-varying orbital angular momentum (OAM) realized by high-harmonic generation (HHG) provides extraordinary tools for q…
physics.app-ph2022
Discrete Huygens' Metasurface: Realizing Anomalous Reflection and Diffraction Mode Circulation with a Robust, Broadband and Simple Design
Chu Qi, Alex M. H. Wong
Metasurfaces composed of subwavelength unit cells usually require a large number of unit cells which leads to complicated design and optimization. Aggressive discretization in a me…