Compact launching double arbitrarily accelerating caustic beams with orthogonal polarizations based on a metasurface are presented. By only tailoring the phase of the transmitted fields from an amorphous silicon elliptical posts array, launching double arbitrarily accelerating caustic beams with orthogonal polarizations is achieved. The trajectories of vector caustic beams with orthogonal polarizations are dependent on the phase modulations through the structural units of the metasurfaces. By changing the polarization of the incident light, dynamic switching between two caustic beams is obtained. Compared to the traditional methods, the simple design method can provide a very compact device overcoming some limitations of the traditional methods for generating vector caustic beams. The results can be used for potential applications in integrated optics, polarization optics, dynamic beam shaping, biosensing, and micro-particle manipulation.

中文翻译：

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利用介电超表面紧凑产生正交极化的任意加速双苛性光束

提出了基于超颖表面的具有正交极化的紧凑发射双任意加速苛性束。通过仅调整来自非晶硅椭圆柱阵列的透射场的相位，就可以实现发射具有正交极化的任意双倍加速的苛性光束。具有正交极化的矢量苛性光束的轨迹取决于通过超表面的结构单元的相位调制。通过改变入射光的偏振，可以获得两个苛性光束之间的动态切换。与传统方法相比，简单的设计方法可以提供一种非常紧凑的设备，克服了传统方法产生矢量苛性束的局限性。