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    • 摘要: 偏振作为光的基本特性之一,其产生、调控和探测被广泛应用于通信、成像、光学加密等领域。然而传统的偏振器件存在体积大、集成度低等问题。亚波长尺度的超表面由于其独特的光场调控机制,为偏振器件的小型化和低成本提供了创新性的解决方案。本文对近年来基于超表面的偏振器件研究进展及超表面制备工艺进行综述。从超表面相位调控机理入手,简单介绍了传输相位、几何相位、广义几何相位和共振相位的调控方法,重点总结了偏振转换、偏振分束、矢量涡旋光发生器、高阶庞加莱球光学加密、偏振多通道全息、偏振探测等不同超表面偏振器件及其制备工艺,最后展望了该领域可能的发展趋势和应用前景。

       

      Abstract: Polarization, as one of the basic characteristics of light, is widely utilized in communication, imaging, optical encryption, and other fields. However, traditional polarization devices face numerous problems such as large size and low integration. Due to their unique light field manipulation mechanisms, subwavelength-scale metasurfaces offer innovative solutions for miniaturization and cost reduction of polarization devices. This paper reviews recent advances in metasurface-based polarization devices and fabrication techniques. Starting from the phase manipulation mechanisms of metasurfaces, the article briefly introduces methods for controlling the transmission phase, geometric phase, generalized geometric phase, and resonance phase. The focus is summarizing various metasurface polarization devices and their fabrication, including polarization conversion, polarization beam splitting, vector vortex beam generators, high-order Poincaré sphere optical encryption, polarization multi-channel holography, and polarization detection. Finally, we discuss potential development trends and application prospects in this field.