论文标题
全维空间轻元调节器
Full-Dimensional Spatial Light Meta-modulators
论文作者
论文摘要
全维空间光元调节器需要同时对空间相，振幅和极化的同时操作。这是迈向利用光线的完整资源的重要一步。但是，由于需要多个独立的控制因素，全维元调节可能是具有挑战性的。为了应对这一挑战，我们在这里提出并行任务几何相位额叶。实际上，元原子的宽带几何阶段分为几个子宽度，每个宽度都作为通过几何相，干扰和正交极化光束叠加来操纵光相，振幅和极化的独立控制因子。因此，宏观原子的宏观群体导致可以实现宽带全维空间光元调节的元时间。最后，我们在实验中构建并在实验上证明了具有原始或修改的衍射的特殊结构光束，作为空间相，振幅和极化调制的特征。这种方法铺平了通过全维空间光元调制器实现的未来广泛应用的方式。
The full-dimensional spatial light meta-modulator requires simultaneous, arbitrary and independent manipulation of spatial phase, amplitude, and polarization. It is an essential step towards harnessing complete dimensional resources of light. However, full-dimensional meta-modulation can be challenging due to the need of multiple independent control factors. To address this challenge, here we propose parallel-tasking geometric phase metasurfaces. Indeed, the broadband geometric phase of meta-atoms is divided into several sub-phases, each of which serves as an independent control factor to manipulate light phase, amplitude, and polarization through geometric phase, interference, and orthogonal polarization beam superposition, respectively. Therefore, the macroscopic group of meta-atoms leads to the metasurfaces that can achieve the broadband full-dimensional spatial light meta-modulation. Finally, we fabricate and experimentally demonstrate the meta-modulator that generates special structured light beams with original or modified diffractions, as the signature of spatial phase, amplitude and polarization modulation. This approach paves the way to future wide applications of light manipulation enabled by the full-dimensional spatial light meta-modulators.
