标题： 基于MoS$_2$的垂直堆叠腔中的法布里-珀罗共振模式用于强光-物质耦合和拓扑相奇点 显示英文标题

标题： Fabry-Perot resonance modes in a MoS$_2$-based vertical stacking cavity for strong light-matter coupling and topological phase singularity

摘要： 在原子过渡金属二硫化物（TMDs）中丰富的介电特性增强了光-物质相互作用，并有助于多种光学现象。将TMDs直接转移到光子晶体上可以实现光学场的限制，并通过极化子的生成改变光子色散。然而，这种堆叠方法严重限制了光-物质相互作用。通过构建由介电材料和单层MoS$_2$交替层组成的垂直堆叠腔，可以显著改善这一限制。这种多层结构已被证明是控制法布里-珀罗腔共振模式的紧凑、通用且可定制的平台。角度分辨反射进一步有助于研究共振模式色散。此外，强光-物质相互作用导致多个完美吸收，其中单层MoS$_2$在该系统中的吸收起着显著作用，这通过电场分布的示意图得到了揭示。多个完美吸收产生大量具有拓扑对的相位奇点，其生成、演化和湮灭可以通过调整腔参数来控制。我们的研究结果为优化光-物质相互作用提供了灵活且一致的框架，并支持进一步研究波前整形、光学涡旋和拓扑变体。 显示英文摘要

摘要： Rich dielectric properties in atomic transition metal dichalcogenides (TMDs) enhance light-matter interactions and contribute to a variety of optical phenomena. The direct transfer of TMDs onto photonic crystals facilitates optical field confinement and modifies photon dispersion through the generation of polaritons. However, light-matter interaction is severely limited by this stacking method. This limitation can be significantly improved by constructing a vertical stacking cavity with alternating layers of dielectric material and monolayer MoS$_2$. This multilayer structure is proven to be a compact, versatile, and customizable platform for controlling Fabry-Perot cavity resonance mode. Angle-resolved reflectance further aids in studying resonance mode dispersion. Moreover, the strong light-matter interaction results in multiple perfect absorptions, with the monolayer MoS$_2$ significantly contributing to the absorption in this system, as schematically revealed by the electric field distribution. The multiple perfect absorptions produce an unusual amounts of phase singularities with topological pairs, whose generation, evolution, and annihilation can be controlled by adjusting cavity parameters. Our findings provide a flexible and consistent framework for optimizing light-matter interactions and supporting further studies on wavefront shaping, optical vortices, and topological variants.