论文标题
紧凑的光学斗篷的逆设计和微波频率的实验演示
Inverse design of compact optical cloaks and experimental demonstration at microwave frequencies
论文作者
论文摘要
光子学中的逆设计已引起了越来越多的关注，这是一种强大的方法，超出了基于直觉的设计。在这封信中，我们介绍了在微波频率下进行紧凑的光学披风的反设计和实验证明。矩形和圆形斗篷的两种不同的构型在数值上设计，以减少与完美的电导体对象相互作用的入射光的散射。设计的覆盖结构由低折射率的介电乳酸材料组成，它们是通过3D打印方法制成的。实验测量与数值计算非常吻合。覆盖（4λX4λ）区域的设计区域可实现λ直径的隐藏圆对象，其中λ表示入射光的波长。提出的方法可以使具有各种大小和形状的不同物体隐藏。
Inverse design in photonics has gathered increasing attention as a powerful approach that goes beyond the intuition-based designs. In this Letter, we present the inverse design and experimental demonstration of compact optical cloaks at microwave frequencies is conducted. Two different configurations of rectangular and circular cloaks are numerically designed to reduce the scatterings of incident light interacting with a perfect electrical conductor object. The designed cloaking structures consist of dielectric polylactide material with a low refractive index and they are fabricated by 3D printing approach. The experimental measurements are in good agreement with the numerical calculations. The designed region covering (4λ x 4λ) area enables hiding circular object of λ diameter where λ denotes the wavelength of incident light. The proposed approach may enable the concealment of different objects possessing various size and shapes.
