地毯隐身与拉普拉斯变换

三维地毯斗篷对700 nm光波的远场光学相位隐身

Optical phase cloaking of 700-nm light waves in the far field by a three-dimensional carpet cloak

变换光学是一种将空间几何学与光的传播联系起来的设计工具。隐形斗篷是一个相应的基准示例。最近在光学频率的实验已经证明了光振幅的伪装（“射线伪装”）。在这封信中，我们证明了远场隐形的光相位（“波隐形”）的干涉显微镜成像实验上先前推出的三维地毯斗篷在700 nm波长和任意偏振的光。

Designing a broadband and linear polarization metasurface carpet cloak in the visible

In the past few years, carpet cloaking attracted interests because of its feasibility at optical frequencies and potential in stealth technologies. Metasurfaces have been proposed as a method to engineer ultra-thin carpet cloaking surfaces due to their abilities to manipulate wavefronts, polarization, and phase at subwavelength scale. However, achieving broadband carpet cloaking with a significant bandwidth is one of the key remaining challenges for metasurface designs. To date, broadband carpet cloaking based on metasurfaces has not been achieved and cloaking is limited to discrete wavelength…

隐藏在地毯下：隐形的新策略

Hiding Under the Carpet: a New Strategy for Cloaking

讨论了一种新型的斗篷：一种使所有被斗篷覆盖的物体看起来像一个扁平的导电片的斗篷。它的优点是，斗篷的参数都不是奇异的，实际上可以使其各向同性。它使光频宽带隐身更近了一步。

Broadband Cross-Circular Polarization Carpet Cloaking based on a Phase Change Material Metasurface in the Mid-infrared Region

In view of the fact that most invisibility devices focus on linear polarization cloaking and that the characteristics of mid infrared cloaking are rarely studied, we propose a cross circularly polarized invisibility carpet cloaking device in the mid infrared band. Based on the Pancharatnam Berry phase principle, the unit cells with the cross circular polarization gradient phase were carefully designed and constructed into a metasurface. In order to achieve tunable cross circular polarization carpet cloaks, a phase change material is introduced into the design of the unit structure. When the ph…

介质半空间上的地毯式隐身

Carpet cloaking on a dielectric half-space

地毯式隐身是为了将目标隐藏在介质半空间中而不被电磁探测到。一个由解析函数指定的二维保角变换用于设计。只有一个非奇异的材料参数分布足以表征。隐身罩位于介质半空间上，由用于电磁波重定向的无损上部和用于诱导正确反射系数和吸收透射的吸收底部层组成。数值模拟与高斯光束入射进行验证。

在隐形的地毯斗篷下看着外面

Watching outside while under a carpet cloak of invisibility

在这封信中，我们展示了一种独特的方法，可以在隐藏在基于变换光学的地毯隐身中的同时观察外面。与传统的地毯隐身不同，它屏蔽了所有入射的电磁波，我们打破了斗篷，让入射光进入地毯。因此，外部信息在斗篷内部被检测到。为了恢复无形的隐身，在破碎的空间中应用了补充技术。因此，一个藏在里面和观察外面（HIWO）的地毯斗篷被缝了起来，这是一个完美的隐形斗篷，同时允许监视外面。我们的工作提供了一个策略，理想的斗篷同时具有“隐藏”和“观看”功能。