单层MoS2与等离子体纳米天线阵列集成中的Fano共振与光谱修饰光致发光增强
Fano resonance and spectrally modified photoluminescence enhancement in monolayer MoS2 integrated with plasmonic nanoantenna array
AI总结：
本文将单层MoS2与银蝴蝶结纳米天线阵列集成，利用激子-等离子体耦合实现室温下可调光致发光增强和表面增强拉曼散射，并在低温下通过调节阵列设计获得可调Fano共振，为新型光学器件设计提供平台。
摘要：
在二维原子级薄晶体中操控光与物质相互作用对于在这些强受限材料中获得新的光电功能至关重要。本文通过将化学生长的单层MoS2与支持窄表面晶格等离子体共振的银蝴蝶结纳米天线阵列集成，实现了一种独特的二维光学系统。增强的激子-等离子体耦合使发射和激发过程发生深刻变化，从而在室温下实现光谱可调的大幅光致发光增强以及表面增强拉曼散射。此外，在低温下，由于MoS2激子与蝴蝶结阵列等离子体共振相互作用时阻尼降低，实现了更强的激子-等离子体耦合，从而在反射光谱中产生Fano线形。该Fano线形源于激子激发路径与等离子体激发路径之间的干涉，可通过改变蝴蝶结阵列的晶格设计来调节两个系统之间的耦合强度而实现调谐。利用可调等离子体谐振器操控二维系统光学特性的能力，为设计具有精确定制响应的新型光学器件提供了新平台。
英文摘要：
The manipulation of light-matter interactions in two-dimensional atomically thin crystals is critical for obtaining new optoelectronic functionalities in these strongly confined materials. Here, by integrating chemically grown monolayers of MoS2 with a silver-bowtie nanoantenna array supporting narrow surface-lattice plasmonic resonances, a unique two-dimensional optical system has been achieved. The enhanced exciton-plasmon coupling enables profound changes in the emission and excitation processes leading to spectrally tunable, large photoluminescence enhancement as well as surface-enhanced Raman scattering at room temperature. Furthermore, at low temperatures, due to the decreased damping of MoS2 excitons interacting with the plasmonic resonances of the bowtie array, stronger exciton-plasmon coupling is achieved resulting in a Fano lineshape in the reflection spectrum. The Fano lineshape, which is due to the interference between the pathways involving the excitation of the exciton and plasmon, can be tuned by altering the coupling strengths between the two systems via changing the design of the bowties lattice. The ability to manipulate the optical properties of two-dimensional systems with tunable plasmonic resonators offers a new platform for the design of novel optical devices with precisely tailored responses.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
