计算时空调制表面：一种动力学微分形式
Calculating spatiotemporally modulated surfaces: a dynamical differential formalism
摘要：
电磁波在具有空间和时间相关边界的系统中经历衍射和类似多普勒的频率转换。为了分析这种情况下，传统的方法要求本征模或并矢格林函数在空间和时间相关的媒体。在这里，我们提出了一个动态微分方法，不需要他们中的任何一个。我们的方法利用动态坐标变换，以简化计算的光学响应的空间和时间相关的系统。我们发现，衍射对称性被打破行波型时空调制的存在。
英文摘要：
Electromagnetic waves in a system with a space and time dependent boundary experience both diffraction and Doppler-like frequency conversion. In order to analyse such situations, conventional methods call for either the eigenmodes or the dyadic Green's function in space and time dependent media. Here, we propose a dynamical differential method which does not require either of them. Our method utilises a dynamical coordinate transformation in order to simplify the calculation of the optical response of the space and time dependent system. We reveal that the diffraction symmetry is broken in the presence of traveling-wave type spatiotemporal modulation.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
