AI 中文总结
研究基于旋磁光子晶体的非互易亚衍射成像，通过施加交错磁场实现超越衍射极限的非互易光传播，经实验观察到宽带亚衍射成像及等频轮廓转变，为构建抗后向散射超分辨率成像系统提供范例。
AI 中文摘要
亚衍射成像作为一种提高光学成像分辨率的新技术，目前尚无无后向散射的方法。本文理论预测并实验证明，施加交错磁场的旋磁光子晶体支持超越衍射极限的非互易光传播。实验观察到宽带亚衍射成像跨越一对光谱分离的狄拉克点的频率窗口，等频轮廓出现强制形状转变。研究结果为构建基于拓扑光子晶体平台的抗后向散射超分辨率成像系统建立了实用范例。
英文摘要
Subdiffraction imaging serves as a novel technique to enhance the optical imaging resolution, where a backscattering-free approach remains so far unavailable. Here, we theoretically predict and experimentally demonstrate that the gyromagnetic photonic crystals applied with staggered magnetic fields support nonreciprocal light propagation beyond the diffraction limit. Broadband subdiffraction imaging was experimentally observed to span the frequency window traversing a pair of spectrally separated Dirac points, where near-flat equi-frequency contours (EFCs) emerged while experiencing an enforced shape transition. Our findings establish a practical paradigm for constructing backscattering-immune super-resolution imaging systems based on topological photonic crystal platforms.
Comments12 pages, 3 figures
