Khalid Ata Ur Rahman, Feng Fu, Khan Muhammad Ismail, Yuan Xiaocong, Somekh Michael Geoffrey
Opt Express. 2022 Apr 11;30(8):13459-13468. doi: 10.1364/OE.453505.
Metasurfaces offer diverse wavefront control by manipulating amplitude, phase, and polarization of light which is beneficial to design subwavelength scaled integrated photonic devices. Metasurfaces based tunable circular polarization (CP) beam splitting is one functionality of interest in polarization control. Here, we propose and numerically realize metasurface based spin tunable beam splitter which splits the incoming CP beam into two different directions and tune the splitting angles by switching the handedness of incident light polarization. The proposed design approach has potential in applications such as optical communication, multiplexing, and imaging.
超表面通过操纵光的振幅、相位和偏振来提供多样的波前控制，这有利于设计亚波长尺度的集成光子器件。基于超表面的可调谐圆偏振（CP）光束分裂是偏振控制中一项令人感兴趣的功能。在此，我们提出并通过数值方法实现了基于超表面的自旋可调谐光束分裂器，该器件可将入射的圆偏振光束分裂为两个不同方向，并通过切换入射光偏振的旋向来调整分裂角度。所提出的设计方法在光通信、复用和成像等应用中具有潜力。
