Metasurfaces have demonstrated revolutionary capabilities in manipulating the polarization, phase, and amplitude of light. Pancharatnam–Berry (P–B) phase metasurfaces can operate over a broad spectrum and robust phase distributions against fabrication tolerance. However, the conjugated characteristic of the modulated phases for different spin photons introduces an obstacle for multifunctional photonics applications. This problem seriously hinders the development of P–B phase metasurfaces. We proposed a method through symmetry breaking of photonic spin–orbit interactions and achieving spin-independent manipulation of spin–orbit interactions. As a proof-of-principle demonstration, we realized polarization-multiplexed multifunctional metalenses at visible and infrared wavelengths with high numerical aperture, and the focal lengths of different foci can be adjusted independently. The proposed metalens has potential applications in imaging, optical communications and optical trapping...

中文翻译：

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通过自旋轨道相互作用的独立于自旋的极化多极化金属

超颖表面在操纵光的偏振，相位和振幅方面表现出革命性的能力。Pancharatnam–Berry（PB）相超颖表面可以在宽广的光谱范围内运行，并且具有坚固的相分布，可抵抗制造公差。然而，不同自旋光子的调制相位的共轭特性为多功能光子学应用带来了障碍。这个问题严重阻碍了PB相超表面的发展。我们提出了一种通过对称破坏光子自旋-轨道相互作用并实现自旋无关的自旋-轨道相互作用的方法。作为原理证明，我们实现了在可见光和红外波长下具有高数值孔径的偏振复用多功能金属镜，并且不同焦点的焦距可以独立调节。拟议的金属元素在成像，光通信和光陷波方面具有潜在的应用。