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arXiv · 2507.10260

High efficiency, high quality factor active membrane metasurfaces with extended Kerker effect

Junxing Fan·Ye Zhou·Zhanqiang Xue·Guizhen Xu·Junliang Chen·Hongyang Xing·Longqing Cong
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Abstract

Efficient, low-power, and highly integrated optoelectronic devices remain a critical yet challenging goal.Here, we introduce the extended Kerker effect paradigm that synergizes Kerker's condition with quasi-bound states in the continuum (q-BICs) to overcome these limitations. By engineering dual-mode dispersion, we achieve a high efficiency beam deflector using a membrane metasurface, simultaneously realizing robust parameter tolerance and narrow-linewidth resonances-two typically conflicting properties.Our experiment demonstrates an absolute beam deflection efficiency exceeding 92%, with exceptional spectral and spatial selectivity, including a 4 GHz linewidth, a 2.8o divergence angle, and a quality factor of 114. Additionally, it enables 94% transmission intensity modulation at a pump intensity as low as 0.5 W/cm2 in experiments. The extended Kerker effect provides a scalable platform for energy-efficient and integrable optoelectronic devices, paving the way for transformative advancements in next-generation wireless communications and LiDAR.

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Junxing Fan, Ye Zhou, Zhanqiang Xue, Guizhen Xu, Junliang Chen, Hongyang Xing, Longqing Cong. 2025-07-14. High efficiency, high quality factor active membrane metasurfaces with extended Kerker effect. https://doi.org/10.1126/sciadv.adw4752

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