High efficiency, high quality factor active membrane metasurfaces with extended Kerker effect
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.
Cite
@article{arxiv.2507.10260,
title = {High efficiency, high quality factor active membrane metasurfaces with extended Kerker effect},
author = {Junxing Fan and Ye Zhou and Zhanqiang Xue and Guizhen Xu and Junliang Chen and Hongyang Xing and Longqing Cong},
journal= {arXiv preprint arXiv:2507.10260},
year = {2026}
}