Abstract Vectorial optical fields (VOFs) exhibiting tailored wave fronts and spatially inhomogeneous polarization distributions are particularly useful in photonic applications. However, devices to generate them, made by natural materials or recently proposed metasurfaces, are either bulky in size or less efficient, or exhibit restricted performances. Here, we propose a general approach to design metadevices that can efficiently generate two distinct VOFs under illuminations of circularly polarized lights with different helicity. After illustrating our scheme via both Jones matrix analyses and analytical model calculations, we experimentally demonstrate two metadevices in the near-infrared regime, which can generate vortex beams carrying different orbital angular momenta yet with distinct inhomogeneous polarization distributions. Our results provide an ultracompact platform for bifunctional generations of VOFs, which may stimulate future works on VOF-related applications in integration photonics.

中文翻译：

---

用于矢量光场双功能生成的高效元器件

摘要 矢量光场 (VOF) 具有定制的波前和空间非均匀偏振分布，在光子应用中特别有用。然而，由天然材料或最近提出的超表面制成的产生它们的设备要么体积庞大，要么效率低下，或者表现出有限的性能。在这里，我们提出了一种设计元器件的通用方法，该方法可以在具有不同螺旋度的圆偏振光的照射下有效地生成两个不同的 VOF。在通过琼斯矩阵分析和解析模型计算说明我们的方案后，我们通过实验证明了近红外区域的两个元器件，它们可以产生携带不同轨道角动量但具有明显不均匀偏振分布的涡旋光束。