Tian Yuan, Du Yuhan, Sun Zhitong, Yuan Shuangxiu, Wu Wenbin, Shi Zeping, Yuan Xiang, Zhu Xiaolong, Wu Jian
Opt Express. 2025 Jan 27;33(2):1660-1668. doi: 10.1364/OE.545868.
The recent surge of interest in moiré photonics arises from the possibility of exploring many groundbreaking physical phenomena in photonics. These phenomena include photonic topological states and magic-angle lasing, which offer an attractive platform for manipulating the flow and confinement of light from remarkably simple device geometries. In this work, we fabricate a series of metallic moiré superlattices supporting moiré plasmon polaritons and explore the moiré-potential induced plasmonic resonances. We demonstrate that two-dimensional moiré plasmonic superlattices exhibit transmittance and polarization-dependent responses because of the localized plasmonic resonances in the infrared range, whose modes have a near-flat dispersion band. Our findings hold the potential for the understanding of localized plasmonic resonances within moiré superlattices.
