论文标题
有效的大面积跨面的逆设计，以实现不一致的光
Efficient inverse design of large-area metasurfaces for incoherent light
论文作者
论文摘要
不连贯的光无处不在，但是设计可以处理其随机性质的光学设备非常具有挑战性，因为直接对许多不连贯的事件梁进行平均可能需要大量的散射计算。我们展示了如何通过互惠技术解决这个问题，该技术导致三个数量级的加速：一个麦克斯韦求解（使用任何数值技术）而不是数千。这种改进使我们能够执行有效的逆设计，对光准直仪和集中器等应用的元图的大规模优化。我们显示了入射光的角度分布对所得性能的影响，并显示了仅在非零角度分布的“环形”梁的情况下特别有希望的设计。
Incoherent light is ubiquitous, yet designing optical devices that can handle its random nature is very challenging, since directly averaging over many incoherent incident beams can require a huge number of scattering calculations. We show how to instead solve this problem with a reciprocity technique which leads to three orders of magnitude speedup: one Maxwell solve (using any numerical technique) instead of thousands. This improvement enables us to perform efficient inverse design, large scale optimization of the metasurface for applications such as light collimators and concentrators. We show the impact of the angular distribution of incident light on the resulting performance, and show especially promising designs for the case of "annular" beams distributed only over nonzero angles.
