Huygens’ metasurfaces provide a versatile and efficient platform for exotic wave manipulation. Conventional transmissive Huygens’ metasurfaces rely on the interference between different multipole excitations to minimize the undesired reflection, but the different nature between multipoles introduces challenge on the bandwidth and practical applications. Here, we reveal that in contrast to the conventional scheme, exciting congener dipoles within the same multipole catalogue is also possible to realize high-efficiency broadband Huygens’ metasurfaces for linearly polarized light. A theoretical model has been proposed and the required conditions for zero reflection and $2\pi$ phase variation have been derived in the dipole approximation. This model has been validated by a silicon dual-nanodisk metasurface, and the beam deflection and focusing functionalities have also been demonstrated with high efficiency and broadband properties.

中文翻译：

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基于同类偶极激发的惠更斯超表面

惠更斯的超表面为奇异的波浪操纵提供了一个通用而有效的平台。常规的透射惠更斯的超表面依靠不同多极激发之间的干扰来最小化不希望的反射，但是多极之间的不同性质对带宽和实际应用提出了挑战。在这里，我们揭示出与常规方案相反，在同一多极子目录中激发同系偶极子也有可能实现用于线性偏振光的高效宽带惠更斯超表面。提出了一个理论模型，并提出了零反射和$2\pi$相位变化已通过偶极近似得出。该模型已通过硅双纳米磁盘超表面验证，并且光束偏转和聚焦功能也已被证明具有高效和宽带特性。