We propose an orientation-selective elliptic optical vortex array (OS-EOVA). Using multicoordinate (namely, polar, Cartesian, and elliptic) transformations, three kinds of operations applied on optical vortex elements (including location, rotation, and stretching) were executed to obtain the desired orientation in the observed plane. Then, exploiting the reverse design technique, the above-mentioned operations were mapped onto the initial execution plane via Fourier transform. Based on this, 1D and 2D OS-EOVAs were generated experimentally and the existence of optical vortices was verified. Specific OS-EOVAs were designed, possessing antenna array orientation as well as radial and azimuthal orientation. Compared to existing OVAs, the OS-EOVA provides an additional modulated dimension, i.e., orientation. This technique will open up some potential applications, such as complex manipulation of multiparticle systems and fabrication of micromaterials with orientation.

中文翻译：

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定向选择性椭圆光学涡流阵列

我们提出了一种方向选择性椭圆光学涡流阵列（OS-EOVA）。使用多坐标（即极坐标、笛卡尔和椭圆）变换，对光学涡旋元素执行三种操作（包括定位、旋转和拉伸），以获得观察平面中所需的方向。然后，利用逆向设计技术，通过傅立叶变换将上述操作映射到初始执行平面。在此基础上，通过实验生成了 1D 和 2D OS-EOVA，并验证了光学涡流的存在。设计了特定的 OS-EOVA，具有天线阵列方向以及径向和方位角方向。与现有的 OVA 相比，OS-EOVA 提供了额外的调制维度，即方向。